USRE32039E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal and mechanical barrier layers for optical recording elements
Assignee: —
•
Filing: 1984-08-31
•
Granted: 1985-11-26
•
Expires: 2004-08-31
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:20
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/252; G11B7/257; G11B7/2572; G11B7/2575; G11B7/242; G11B7/244; G11B7/246; G11B7/253; G11B7/2531; G11B7/254; G11B7/2542; G11B7/258; G11B7/2585
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3716844A
Cited
US3740761A
Cited
US3990084A
Cited
US4000492A
Cited
US4064205A
Cited
US4069487A
Cited
US4237468A
Cited
US4101907A
Cited
GB2061543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-11-25 | 1989-05-27 | 1989-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-11-25 | 1993-05-27 | 1993-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-11-25 | 1997-05-27 | 1997-11-26 | $7700.00 | Window Closed / Lapsed |