US5878020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Information recording disk with management areas
Assignee: Toshiba Corp
•
Filing: 1997-03-24
•
Granted: 1999-03-02
•
Expires: 2017-03-24
Abstract
Abstract A disk rotated at one of prescribed rotation speeds so as to record information is used. The disk includes a data area formed spirally or concentrically with a center of rotation, in which information is recorded when the disk is being rotated at the rotation speed, and a management area in which management information associated with writing is recorded at the rotation speed when writing is to be performed in the data area during rotation of the disk at the rotation speed. The management area is formed spirally or concentrically with the center of rotation of the disk on a side farther from the center of rotation of the disk.
Inventors
- 👤 Hideki Takahashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:33
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/007; G11B7/0079; G11B20/00; G11B20/10; G11B20/18; G11B20/1883; G11B20/12; G11B20/1217; G11B20/1258; G11B27/00; G11B27/10; G11B27/19; G11B27/28; G11B27/32; G11B27/327; G11B27/329; G11B7/004; G11B7/0045; G11B2220/00; G11B2220/20; G11B2220/23; G11B2220/235; G11B2220/237; G11B2220/25; G11B2220/2537; G11B2220/2562; G11B7/24
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
207 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a predetermined rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a predetermined data area formed spirally or concentrically with a center of rotation of said information recording disk, in which said information is recorded when said information recording disk is being rotated at said predetermined rotation speed, and a predetermined management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said predetermined data area, in which management information associated with writing is recorded when writing is to be performed in said predetermined data area during rotation of said information recording disk at said predetermined rotation speed.
Claim 2
Dependent Claim
207 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a predetermined rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a predetermined data area formed spirally or concentrically with a center of rotation of said information recording disk, in which said information is recorded when said information recording disk is being rotated at said predetermined rotation speed, and a predetermined management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said predetermined data area, in which management information associated with writing is recorded when writing is to be performed in said predetermined data area during rotation of said information recording disk at said predetermined rotation speed.
Claim 3
Dependent Claim
322 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and a first management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed; and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 4
Dependent Claim
322 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and a first management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed; and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 5
Dependent Claim
362 words
A write management method used for information recording in an information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said management method comprising: performing write information management for a first data area only in a first management area; and performing write information management for a second data area only in a second management area, wherein: said first area of said plurality of areas comprises: said first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and said first management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed, and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 6
Dependent Claim
362 words
A write management method used for information recording in an information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said management method comprising: performing write information management for a first data area only in a first management area; and performing write information management for a second data area only in a second management area, wherein: said first area of said plurality of areas comprises: said first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and said first management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed, and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk on a side closer to said center of rotation of said information recording disk than said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 7
Dependent Claim
206 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a predetermined rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a predetermined data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said predetermined rotation speed, and a predetermined management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from said center of rotation of said information recording disk than said predetermined data area, in which management information associated with writing is recorded when writing is to be performed in said predetermined data area during rotation of said information recording disk at said predetermined rotation speed.
Claim 8
Dependent Claim
206 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a predetermined rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a predetermined data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said predetermined rotation speed, and a predetermined management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from said center of rotation of said information recording disk than said predetermined data area, in which management information associated with writing is recorded when writing is to be performed in said predetermined data area during rotation of said information recording disk at said predetermined rotation speed.
Claim 9
Dependent Claim
322 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and a first management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from said center of rotation of said information recording disk than said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed; and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from said center of rotation of said information recording disk than said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 10
Dependent Claim
322 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and a first management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from said center of rotation of said information recording disk than said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed; and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from said center of rotation of said information recording disk than said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 11
Dependent Claim
363 words
A write management method used for information recording in an information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said management method comprising: performing write information management for a first data area only in a first management area; and performing write information management for a second data area only in a second management area, wherein: said first area of said plurality of areas comprises: said first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and said first management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from said center of rotation of said information recording disk than said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed, and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording- disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from to said center of rotation of said information recording disk than said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 12
Dependent Claim
363 words
A write management method used for information recording in an information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said management method comprising: performing write information management for a first data area only in a first management area; and performing write information management for a second data area only in a second management area, wherein: said first area of said plurality of areas comprises: said first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and said first management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from said center of rotation of said information recording disk than said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed, and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording- disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk on a side farther from to said center of rotation of said information recording disk than said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 13
Dependent Claim
192 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a predetermined rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a predetermined data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said predetermined rotation speed, and a predetermined management area formed spirally or concentrically with said center of rotation of said information recording disk in said predetermined data area, in which management information associated with writing is recorded when writing is to be performed in said predetermined data area during rotation of said information recording disk at said predetermined rotation speed.
Claim 14
Dependent Claim
192 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a predetermined rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a predetermined data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said predetermined rotation speed, and a predetermined management area formed spirally or concentrically with said center of rotation of said information recording disk in said predetermined data area, in which management information associated with writing is recorded when writing is to be performed in said predetermined data area during rotation of said information recording disk at said predetermined rotation speed.
Claim 15
Dependent Claim
294 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and a first management area formed spirally or concentrically with said center of rotation of said information recording disk in said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed; and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk in said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 16
Dependent Claim
294 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and a first management area formed spirally or concentrically with said center of rotation of said information recording disk in said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed; and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk in said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 17
Dependent Claim
334 words
A write management method used for information recording in an information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said management method comprising: performing write information management for a first data area only in a first management area; and performing write information management for a second data area only in a second management area, wherein: said first area of said plurality of areas comprises: said first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and said first management area formed spirally or concentrically with said center of rotation of said information recording disk in said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed, and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk in said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 18
Dependent Claim
334 words
A write management method used for information recording in an information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said management method comprising: performing write information management for a first data area only in a first management area; and performing write information management for a second data area only in a second management area, wherein: said first area of said plurality of areas comprises: said first data area formed spirally or concentrically with a center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at said first rotation speed, and said first management area formed spirally or concentrically with said center of rotation of said information recording disk in said first data area, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed, and a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is recorded when said information recording disk is being rotated at a second rotation speed, and a second management area formed spirally or concentrically with said center of rotation of said information recording disk in said second data area, in which management information associated with writing is recorded when writing is to be performed in said second data area during rotation of said information recording disk at said second rotation speed.
Claim 19
Dependent Claim
294 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a first data area formed spirally or concentrically with a center of rotation of said information recording disk, from which information is read or to which information is written when said information recording disk is being rotated at said first rotation speed, and a first management area formed spirally or concentrically with said center of rotation of said information recording disk, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed; a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, from which information is read out when said information recording disk is being rotated at a second rotation speed; and a third area of said plurality of areas comprising: a third data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is written once or from which said information is read out when said information recording disk is being rotated at a third rotation speed.
Claim 20
Dependent Claim
294 words
An information recording disk arranged to be rotated at a plurality of rotation speeds such that information is recorded in a first area of a plurality of areas on said information recording disk when said information recording disk is being rotated at a first rotation speed, each area of said plurality of areas being arranged to be accessed when said information recording disk is rotated at a corresponding rotation speed being different from a corresponding rotation speed of any other area of said plurality of areas, said information recording disk comprising: said first area of said plurality of areas comprising: a first data area formed spirally or concentrically with a center of rotation of said information recording disk, from which information is read or to which information is written when said information recording disk is being rotated at said first rotation speed, and a first management area formed spirally or concentrically with said center of rotation of said information recording disk, in which management information associated with writing is recorded when writing is to be performed in said first data area during rotation of said information recording disk at said first rotation speed; a second area of said plurality of areas comprising: a second data area formed spirally or concentrically with said center of rotation of said information recording disk, from which information is read out when said information recording disk is being rotated at a second rotation speed; and a third area of said plurality of areas comprising: a third data area formed spirally or concentrically with said center of rotation of said information recording disk, in which information is written once or from which said information is read out when said information recording disk is being rotated at a third rotation speed.
Claim 21
Dependent Claim
27 words
An information recording disk according to claim 10, wherein defect information associated with said first to said third data areas are recorded in said first management area.
Claim 22
Dependent Claim
31 words
An information recording disk according to claim 10, wherein use frequency information associated with any one of said first to said third data areas is recorded in said first management area.
Claim 23
Dependent Claim
31 words
An information recording disk according to claim 10, wherein use condition information associated with any one of said first to said third data areas is recorded in said first management area.
Claim 24
Dependent Claim
16 words
An information recording disk according to claim 13, wherein said use condition information includes a password.
References Cited (Backward Citations)
US5475668A
Cited
US5596564A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-03-01 | 2002-08-31 | 2003-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-01 | 2006-08-31 | 2007-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-01 | 2010-08-31 | 2011-03-02 | $7700.00 | Window Closed / Lapsed |