Patent US3202825A successfully refreshed from Google Patents.
US3202825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Articles of hot pressed zinc sulphide having a durable metal film coated thereon
Assignee: Eastman Kodak Co
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Filing: 1963-01-16
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Granted: 1965-08-24
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Expires: 1983-01-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Brown
- 👤 Paul B Mauer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:21
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/10; G; G02; G02B; G02B1/00; G02B1/02; G02B1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
AN ARTICLE OF MANUFACTURE COMPRISING A SUBSTRATUM OF A HOT PRESSED POLYCRYSTALLINE ZINC SULFIDE ELEMENT HAVING VACUUM-COATED THEREON A SUBLAYER OF ZINC SULFIDE, AND A METAL FILM VACUUM COATED ON SAID SUBLAYER.
Claim 2
Dependent Claim
32 words
AN ARTICLE OF MANUFACTURE COMPRISING A SUBSTRATUM OF A HOT PRESSED POLYCRYSTALLINE ZINC SULFIDE ELEMENT HAVING VACUUM-COATED THEREON A SUBLAYER OF ZINC SULFIDE, AND A METAL FILM VACUUM COATED ON SAID SUBLAYER.
References Cited (Backward Citations)
US2808351A
Cited
US2964636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |