US3192046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide emulsions sensitized with thioether and developer combinations
Assignee: Eastman Kodak Co
•
Filing: 1961-08-17
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Granted: 1965-06-29
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Expires: 1981-08-17
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Kennard
- 👤 Frederick J Russell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:37
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/42; G03C1/08; G03C1/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING A SENSITIZING AMOUNT OF A SENSITIZER COMBINATION COMPRISING: (A) A THIOETHER SILVER HALIDE CHEMICAL SENSITIZER, (B) A 3-PYRAZOLIDONE SILVER HALIDE DEVELOPING AGENT, AND (C) A HYDROQUINONE SILVER HALIDE DEVELOPING AGENT AND A COMPOUND CAPABLE OF FORMING A BISULFITE ION.
Claim 2
Dependent Claim
45 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING A SENSITIZING AMOUNT OF A SENSITIZER COMBINATION COMPRISING: (A) A THIOETHER SILVER HALIDE CHEMICAL SENSITIZER, (B) A 3-PYRAZOLIDONE SILVER HALIDE DEVELOPING AGENT, AND (C) A HYDROQUINONE SILVER HALIDE DEVELOPING AGENT AND A COMPOUND CAPABLE OF FORMING A BISULFITE ION.
References Cited (Backward Citations)
GB845928A
Cited
US3046129A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |