US4849618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic medium for magnetic embossment and magnetic card using the same
Assignee: Toppan Infomedia Co Ltd
•
Filing: 1986-04-25
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Granted: 1989-07-18
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Expires: 2006-04-25
Abstract
Abstract A magnetic medium for magnetic embossment comprises a main magnetic layer and a high permeability magnetic-metal layer, a nonmagnetic white metal layer and a coloring layer laminated on the main magnetic layer. A magnetic card comprises a card substrate which is nonmagnetic, and a magnetic medium for magnetic embossment disposed on at least a part of the card substrate, which magnetic medium comprises a main magnetic layer and a high permeability magnetic-metal layer, a nonmagnetic white metal layer and a coloring layer laminated on the main magnetic layer.
Inventors
- 👤 Mamoru Namikawa
- 👤 Yoshiaki Makino
- 👤 Hiroaki Himori
- 👤 Genichi Kagai
- 👤 Hiroshi Kamio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:45
CPC Classifications
G; G06; G06K; G06K19/00; G06K19/06; G06K19/08; G06K19/083; Y; Y10; Y10S; Y10S283/00; Y10S283/904
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
106 words
an embossed magnetic card, comprising: a non-magnetic card substrate, a magnetic medium for magnetic embossment disposed on at least a portion of said non-magnetic card substrate, said magnetic medium further comprising a main magnetic layer and a high permeability magnetic-metal layer laminated thereupon, said main magnetic layer having a thickness within the range of about 2 to about 20 um, and said high permeability magnetic-metal layer having a thickness within a range of about 100 to about 2000 A, said magnetic medium having embossed protrusions, said main magnetic layer being substantially ruptured all around said protrusions to enable a higher magnetic flux concentration at said protrusions.
Claim 2
Dependent Claim
106 words
an embossed magnetic card, comprising: a non-magnetic card substrate, a magnetic medium for magnetic embossment disposed on at least a portion of said non-magnetic card substrate, said magnetic medium further comprising a main magnetic layer and a high permeability magnetic-metal layer laminated thereupon, said main magnetic layer having a thickness within the range of about 2 to about 20 um, and said high permeability magnetic-metal layer having a thickness within a range of about 100 to about 2000 A, said magnetic medium having embossed protrusions, said main magnetic layer being substantially ruptured all around said protrusions to enable a higher magnetic flux concentration at said protrusions.
Claim 3
Dependent Claim
26 words
A magnetic card as defined in claim 1, wherein an analog or digital signal recording portion is provided separately from said magnetic medium for magnetic embossment.
Claim 4
Dependent Claim
26 words
A magnetic card as defined in claim 1, wherein a synthetic-resin protective layer is interdisposed between said main magnetic layer and said high permeability magnetic-metal layer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |