Patent US3764340A successfully refreshed from Google Patents.
US3764340A
Expired / Lapsed
US
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Spectrally sensitized silver halide photographic emulsion
Assignee: Fujifilm Holdings Corp
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Filing: 1971-09-24
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Granted: 1973-10-09
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Expires: 1991-09-24
Abstract
Abstract A SPECTRALLY SENSITIZED SILVER HALIDE PHOTOGRAPHIC EMULSION, AND MORE PARTICULARLY A SILVER HALIDE PHOTOGRAPHIC EMULSION SUPERSENSITIZED BY THE COMBINED USE OF AT LEAST TWO SENSITIZING DYES RESULTING IN A HIGH RED SENSITIVITY.
Inventors
- 👤 A Sato
- 👤 T Ikeda
- 👤 K Shiba
- 👤 H Takei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:44
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/02; C09B23/06; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; G03C1/29
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |