Patent US3663227A successfully refreshed from Google Patents.
US3663227A
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Rapid stabilization process for photographic silver halide materials
Assignee: Fujifilm Holdings Corp
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Filing: 1969-11-28
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Granted: 1972-05-16
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Expires: 1989-11-28
Abstract
Abstract An improved stabilization process for photographic silver halide light-sensitive material comprising adding to a rinsing solution, used in the process, an antioxidant selected from the group recited in claim 1.
Inventors
- 👤 Kinji Ohkubo
- 👤 Katsumi Hayashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:40
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/38; G03C5/39; Y; Y10; Y10S; Y10S430/00; Y10S430/137; Y10S430/164
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
30 words
The rapid stabilization process as in claim 1, wherein the concentration of said antioxidant in said rinsing solution is from 0.5 to 3 g. per liter of said rinsing solution.
Claim 2
Dependent Claim
48 words
The rapid stabilization process as in claim 1 wherein said rinsing solution further contains at least one member selected from the group consisting of boric acid, borax, sodium hydrogen phosphate, disodium hydrogen phosphate, potassium hydrogen phosphate, dipotassium hydrogen phosphate, sodium acetate, citric acid, sodium citrate, and ammonium citrate.
Claim 3
Dependent Claim
16 words
The rapid stabilization process as in claim 1 wherein said alkali metal sulfite is sodium sulfite.
Claim 4
Dependent Claim
16 words
The rapid stabilization process as in claim 1 wherein said alkali metal sulfite is potassium sulfite.
Claim 5
Dependent Claim
16 words
The rapid stabilization process as in claim 1 wherein said alkali metal sulfite is sodium bisulfite.
Claim 6
Dependent Claim
16 words
The rapid stabilization process as in claim 1 wherein said alkali metal sulfite is potassium bisulfite.
Claim 7
Dependent Claim
16 words
The rapid stabilization process as in claim 1 wherein said alkali metal sulfite is sodium metabisulfite.
Claim 8
Dependent Claim
16 words
The rapid stabilization process as in claim 1 wherein said alkali metal sulfite is potassium metabisulfite.
Claim 9
Dependent Claim
24 words
The process of claim 1, wherein said sulfite is present in an amount of from 20.0 to 200 grams per liTer of rinsing solution.
Claim 10
Dependent Claim
29 words
The process of claim 1, wherein said antioxidant is added as a solution in a member selected from the group consisting of water, a lower alcohol, acetone, and dioxane.
Claim 11
Dependent Claim
22 words
The process of claim 11, wherein said lower alcohol is a member selected from the group consisting of methanol, ethanol, and isopropanol.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |