Patent US3262781A successfully refreshed from Google Patents.
US3262781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic products
Assignee: Polaroid Corp
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Filing: 1962-07-05
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Granted: 1966-07-26
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Expires: 1982-07-05
Abstract
No abstract record available.
Inventors
- 👤 William H Ryan
- 👤 Lloyd D Taylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:49
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
A PHOTOGRAPHIC PRODUCT COMPRISING A PLURALITY OF LAYERS INCLUDING A SILVER HALDIDE EMULSION LAYER, AT LEAST ONE OF SAID LAYERS HAVING DISPOSED THEREIN A CYCLIC ESTER OF A BORONIC ACID AND AN A,B-ENEDIOL SILVER HALIDE DEVELOPING AGENT.
Claim 2
Dependent Claim
37 words
A PHOTOGRAPHIC PRODUCT COMPRISING A PLURALITY OF LAYERS INCLUDING A SILVER HALDIDE EMULSION LAYER, AT LEAST ONE OF SAID LAYERS HAVING DISPOSED THEREIN A CYCLIC ESTER OF A BORONIC ACID AND AN A,B-ENEDIOL SILVER HALIDE DEVELOPING AGENT.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-25 | 1970-01-24 | 1970-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-25 | 1974-01-24 | 1974-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-25 | 1978-01-24 | 1978-07-26 | $7700.00 | Window Closed / Lapsed |