US3256092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion inhibitors in bleach solutions
Assignee: GAF Chemicals Corp
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Filing: 1962-03-05
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Granted: 1966-06-14
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Expires: 1982-03-05
Abstract
No abstract record available.
Inventors
- 👤 Jr Paul B Means
- 👤 Vincent J Miceli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:16
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/26; G03C5/40; G03C5/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PHOTOGRAPHIC BLEACH SOLUTION COMPRISING A SOLUTION OF AN ALKAL METAL FERRICYANIDE AND AN ALKALI METAL BROMIDE DISSOLVED IN DEMINERALIZED WATER AND HAVING A PH BETWEEN THE RANGE OF 4.0 AND 5.0, SAID SOLUTION CONTAINING AS A CORROSION INHIBITOR THEREFOR, AN ALIPHATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF NITRILOTRIACETIC ACID AND ETHYLENEDIAMINE TETRAACETIC ACID AND THE ALKALI METAL SALTS OF SAID ACIDS, SAID INHIBITOR BEING PRESENT IN AN AMOUNT RANGING FROM 1 TO 8 GRAMS PER LITER OF BLEACH SOLUTION.
Claim 2
Dependent Claim
81 words
A PHOTOGRAPHIC BLEACH SOLUTION COMPRISING A SOLUTION OF AN ALKAL METAL FERRICYANIDE AND AN ALKALI METAL BROMIDE DISSOLVED IN DEMINERALIZED WATER AND HAVING A PH BETWEEN THE RANGE OF 4.0 AND 5.0, SAID SOLUTION CONTAINING AS A CORROSION INHIBITOR THEREFOR, AN ALIPHATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF NITRILOTRIACETIC ACID AND ETHYLENEDIAMINE TETRAACETIC ACID AND THE ALKALI METAL SALTS OF SAID ACIDS, SAID INHIBITOR BEING PRESENT IN AN AMOUNT RANGING FROM 1 TO 8 GRAMS PER LITER OF BLEACH SOLUTION.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |