US3706566A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsion containing optically dye-sensitized silver halide grains of less than 0.2 micron
Assignee: Fujifilm Holdings Corp
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Filing: 1970-02-24
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Granted: 1972-12-19
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Expires: 1990-02-24
Abstract
Abstract A PHOTOGRAPHIC SILVER HALIDE EMULSION IN WHICH AT LEAST 95% OF THE SILVER HALIDE GRAINS ARE LESS THAN 0.2 MICRON OR IN WHICH THE MEAN GRAIN SIZE OF THE SILVER HALIDE GRAINS IS LESS THAN 0.18 AND WHICH CONTAINS A SENSITIZING DYE HAVING AN OXIDATION POTENTIAL OF LESS THAN 0.90 VOLT IS DISCLOSED.
Inventors
- 👤 Keisuke Shiba
- 👤 Tohru Sueyoshi
- 👤 Akira Sato
- 👤 Seiiti Kubodera
- 👤 Motohiko Tsubota
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:19
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/14; C09B23/145; C09B23/0075; C09B23/02; C09B23/04; C09B23/06; C09B23/08; C09B23/083; C09B23/10; C09B23/105; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12
Claims Analysis
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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) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |