US4710452A
Expired / Lapsed
US
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Thin film amorphous optical recording films
Assignee: Eastman Kodak Co
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Filing: 1986-09-15
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Granted: 1987-12-01
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Expires: 2006-09-15
Abstract
Abstract A recording element comprising, as the optical recording layer, an amorphous thin film of an alloy having the formula: (Ge.sub.x Te.sub.1-x).sub.1-z Ti.sub.z wherein, on an atom-to-atom basis, x is from 0.33 to 0.55, and z is greater than zero up to 0.30 is disclosed.
Inventors
- 👤 Pranab K. Raychaudhuri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:26
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/243; G11B2007/24302; G11B2007/24306; G11B2007/24312; G11B2007/24316; Y; Y10; Y10S; Y10S430/00; Y10S430/146; Y10S430/165
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
42 words
A recording element comprising, as the optical recording layer, an amorphous thin film of an alloy having the formula: (Ge.sub.x Te.sub.1-x).sub.1-z Ti.sub.z wherein, on an atom-to-atom basis, x is from 0.33 to 0.55, and z is greater than zero up to 0.30.
Claim 2
Dependent Claim
42 words
A recording element comprising, as the optical recording layer, an amorphous thin film of an alloy having the formula: (Ge.sub.x Te.sub.1-x).sub.1-z Ti.sub.z wherein, on an atom-to-atom basis, x is from 0.33 to 0.55, and z is greater than zero up to 0.30.
Claim 3
Dependent Claim
21 words
The element of claim 1, wherein x is from 0.38 to 0.48, and z is greater than zero up to 0.168.
Claim 4
Dependent Claim
19 words
The element of claim 1, wherein x is from 0.43 to 0.48, and z is from 1.0 to 0.168.
Claim 5
Dependent Claim
13 words
The element of claim 1, wherein x is 0.43, and z is 0.09.
Claim 6
Dependent Claim
16 words
The element of claim 1, wherein x is 0.43, and z is from 0.04 to 0.05.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |