US3674499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver halide photographic supersensitized emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1970-05-27
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Granted: 1972-07-04
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Expires: 1990-05-27
Abstract
Abstract A SUPERSENSITIZING COMBINATION FOR USE IN A PHOTOGRAPHIC EMULSION COMPRISING (1) A SENSITIZING DYE HAVING THE GENERAL FORMULA GENERAL FORMULA I Q<(-C(=C(-R4)-(C(-R5)=CH)N4-C<(-Y1-N(+)(-R2)(X(-))=(CH-CH) N3=)(M-1))-N(-R)-CO-C(=(C(-R3)-CH)N2=C<(-Y-N(-R1)-(CH= CH)N1-))-) WHEREIN THE SYMBOLS R, R1, R2, R3, R4, R5, X, Y, Y1, Q, N1, N2, N3, N4 AND M ARE DESCRIBED HEREINAFTER, AND (2) A CONDENSATE OF FORMALIN WITH A HALOGENATED POLYHYDROXY BENZENE OR A HALOGENATED CRESOL, IS DISCLOSED.
Inventors
- 👤 Keisuke Shiba
- 👤 Masanao Hinata
- 👤 Nobuo Tusji
- 👤 Takushi Miyazaki
- 👤 Akira Sato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:42
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; C; C09; C09B; C09B23/00; C09B23/0008; C09B23/0025; C09B23/0075; G03C1/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |