Patent US3726686A successfully refreshed from Google Patents.
US3726686A
Expired / Lapsed
US
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Light-sensitive silver halide emulsion containing a pyrazole compound antifoggant
Assignee: Konica Minolta Inc
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Filing: 1970-11-25
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Granted: 1973-04-10
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Expires: 1990-11-25
Abstract
Abstract A PYRAZOLE COMPOUND HAVING THE GENERAL FORMULA 3-(R''-SO2-),4-R-PYRAZOLE WHEREIN R AND R'' ARE INDIVIDUALLY SELECTED FROM THE GROUP CONSISTING OF PHENYL, LOWER ALKYL SUBSTITUTED PHENYL, LOWER ALKOXY SUBSTITUTED PHENYL OR HALOGEN SUBSTITUTED PHENYL I INCORPORATED INTO A LIGHT-SENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL. THE PYRAZOLE COMPOUND MAY BE USED IN AN AMOUNT OF 10 MG. TO 2 G. PER MOLE OF SILVER HALIDE CONTAINED IN THE PHOTOGRAPHIC MATERIAL. A LIGHTSENSITIVE SILVER HALIDE PHOTOGRAPHIC MATERIAL WHICH IS ESSENTIALLY FREE FROM FORMATION OF FOG AND STRAIN AND WHICH HAS GOOD STABILITY IS OBTAINED.
Inventors
- 👤 H Inokuma
- 👤 I Iwai
- 👤 Y Kuwabara
- 👤 S Sugita
- 👤 N Ishida
- 👤 T Miyamura
- 👤 Y Kishida
- 👤 T Iwashige
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:40
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/34
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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |