US3565621A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fixing compositions for photographic silver halide light-sensitive elements
Assignee: Individual
•
Filing: 1968-03-29
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Granted: 1971-02-23
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Expires: 1988-03-29
Abstract
Abstract A FIXING COMPOSITION FOR PHOTOGRAPHIC SILVER HALIDE LIGHT-SENSITIVE ELEMENTS CONTAINING AMMONIUM THIOSULFATE WHICH CONTAINS AT LEAST ONE COMPOUND REPRESENTED BY THE GENERAL FORMULA R1-NH-C(=S)-N(-R2)-R3 IS DISCLOSED. THROUGH THE USE OF SAID COMPOSITION, A MARKED REDUCTION IN FIXING TIME IS MADE POSSIBLE.
Inventors
- 👤 Shunichiro Tsuchida
- 👤 Haruo Shibaoka
- 👤 Reiichi Ohi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:12
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/38; Y; Y10; Y10S; Y10S430/00; Y10S430/167
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |