US3415653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic emulsions containing a copolymer of vinylamine and acrylic acid
Assignee: Eastman Kodak Co
•
Filing: 1964-12-21
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Granted: 1968-12-10
•
Expires: 1984-12-21
Abstract
No abstract record available.
Inventors
- 👤 Donald A Smith
- 👤 Ernest J Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:34
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053; G03C8/00; G03C8/02; G03C8/04; G03C8/06; G03C8/24; G03C8/26; G03C8/28
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-10 | 1972-06-10 | 1972-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-10 | 1976-06-10 | 1976-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-10 | 1980-06-10 | 1980-12-10 | $7700.00 | Window Closed / Lapsed |