US3068102A
Expired / Lapsed
US
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Photographic emulsions sensitized with sulfite ester polymers
Assignee: Eastman Kodak Co
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Filing: 1961-03-22
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Granted: 1962-12-11
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Expires: 1981-03-22
Abstract
No abstract record available.
Inventors
- 👤 Peter P Chiesa
- 👤 John R Dann
- 👤 Jr John W Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:17
CPC Classifications
C; C08; C08G; C08G75/00; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/043
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
35 words
A PHOTOGRAPHIC SILVER HALIDE-GELATIN EMULSION CONTAINING A SENSITIZING AMOUNT OF A SULFITE ESTER POLYMER HAVING AN AVERAGE MOLECULAR WEIGHT IN THE RANGE OF ABOUT 400 TO 3000 AND CONSISTING ESSENTIALLY OF THE RECURRING STRUCTURAL UNIT
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |