UST896035I4
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defensive publication
Assignee: —
•
Filing: 1971-05-19
•
Granted: 1972-03-14
•
Expires: 1991-05-19
Abstract
Abstract A LIGHT-SENSITIVE COMPOSITION COMPRISING GRAINS OF SILVER HALIDE AND A POLYMER HAVING CHROMOPHORIC FUNCTIONAL GROUPS IS DISCLOSED. THE POLYMER SERVES AS A SPECTRAL SENSITIZER FOR THE LIGHT-SENSITIVE SILVER HALIDE GRAINS. IN ADDITION TO ITS USE AS A SPECTRAL SENSITIZER, THE POLYMER MAY ALSO BE USED AS A BINDER FOR THE LIGHT-SENSITIVE GRAINS. IN ONE EMBODIMENT UTILIZING THE INVENTION, THERE IS PROVIDED A SUPPORT UPON WHICH THERE IS PLACED A PHOTOGRAPHIC EMULSION COMPRISING LIGHT-SENSITIVE SILVER HALIDE GRAINS AND A POLYMER HAVING REPEATING UNITS OF THE FORMULA: (-CO-((4-((H3C-)2N-)PHENYL)-CH=CH-CH=)C-CO-O-(CH2)4-O-)
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:06
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/06; G03C1/08; G03C1/10
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) | 1975-03-14 | 1975-09-13 | 1976-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-14 | 1979-09-13 | 1980-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-14 | 1983-09-13 | 1984-03-14 | $7700.00 | Window Closed / Lapsed |