Patent US6336087B2 successfully refreshed from Google Patents.
US3243296A
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Method for stabilizing developed photosensitive materials
Assignee: FUGI SHASHIN FILM KK
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Filing: 1964-02-07
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Granted: 1966-03-29
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Expires: 1984-02-07
Abstract
No abstract record available.
Inventors
- 👤 Nasu Kintaro
- 👤 Asai Tomiyasu
- 👤 Hayashi Katsumi
- 👤 Tsuchida Shunichiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:21
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
A PROCESS FOR STABILIZING A DEVELOPED UNFIXED PHOTOSENSITIVE MATERIAL WHICH COMPRISES TREATING SAID DEVELOPED UNFIXED PHOTOSENSITIVE MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING (1) A SILVER COMPLEXING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL THIOSULFATES, AMMONIUM THIOSULFATE, ALKALI METAL THIOCYANATES, AND AMMONIUM THIOCYANATE; (2) A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFITES, AMMONIUM SULFITE, ALKALI METAL BISULFITES, AMMONIUM BISULFITE, ALKALI METAL PYROSULFITES, AND AMMONIUM PYROSULFITE; AND (3) A COMPOUND HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
77 words
A PROCESS FOR STABILIZING A DEVELOPED UNFIXED PHOTOSENSITIVE MATERIAL WHICH COMPRISES TREATING SAID DEVELOPED UNFIXED PHOTOSENSITIVE MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING (1) A SILVER COMPLEXING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL THIOSULFATES, AMMONIUM THIOSULFATE, ALKALI METAL THIOCYANATES, AND AMMONIUM THIOCYANATE; (2) A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFITES, AMMONIUM SULFITE, ALKALI METAL BISULFITES, AMMONIUM BISULFITE, ALKALI METAL PYROSULFITES, AND AMMONIUM PYROSULFITE; AND (3) A COMPOUND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
US2230977A
Cited
US2759825A
Cited
US2782120A
Cited
GB776082A
Cited
US3120795A
Cited
FR1204273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-28 | 1969-09-27 | 1970-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-28 | 1973-09-27 | 1974-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-28 | 1977-09-27 | 1978-03-29 | $7700.00 | Window Closed / Lapsed |