Patent US3799781A successfully refreshed from Google Patents.
US3799781A
Expired / Lapsed
US
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Synthetic silver halide emulsion binder
Assignee: Polaroid Corp
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Filing: 1972-12-14
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Granted: 1974-03-26
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Expires: 1992-12-14
Abstract
Abstract A PHOTOSENSITIVE SILVER HALIDE EMULSION WHEREIN THE EMULSION BINDER COMPRISES A VINYL AMINOALKYL ETHER POLYMER OR COPOLYMER.
Inventors
- 👤 M Fitzgerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:26
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/053
Claims Analysis
Total Claims: 0
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |