US2633447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxidative fixing composition
Assignee: Procter and Gamble Co
•
Filing: 1950-08-31
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Granted: 1953-03-31
•
Expires: 1970-08-31
Abstract
No abstract record available.
Inventors
- 👤 Robert C Head
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:18
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/20; A61K2800/00; A61K2800/40; A61K2800/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A FIXING COMPOSITION ADAPTED FOR REESTABLISHING DISULFIDE LINKAGES IN THE TREATMENT OF REDUCED KERATIN, COMPRISING ESSENTIALLY A HOMOGENEOUS MECHANICAL MIXTURE OF FINELY DIVIDED PARTICLES OF ALKALI METAL BROMATE OXIDIZING AGENT, ACID REACTING BUFFERING AGENT AND NOT MORE THAN 5% FINELY DIVIDED ALKALI, BASED ON BROMATE, THE AVERAGE PARTICLE SIZE OF THE ALKALI BEING LESS THAN THE AVERAGE PARTICLE SIZE OF THE OTHER INGREDIENTS, THE AMOUNT OF ALKALI BEING SUFFICIENT TO STABILIZE SAID BROMATE AGAINST DECOMPOSITION IN THE PRESENCE OF MOISTURE AND ACID REACTING SUBSTANCES, BUT NOT MORE THAN AN AMOUNT WHICH WILL IMPART A PH VALUE OF 7 TO A 2% AQUEOUS SOLUTION OF THE MIXTURE, THE AVERAGE MOISTURE CONTENT OF THE MECHANICAL MIXTURE BEING NOT SUBSTANTIALLY GREATER THAN 2%.
Claim 2
Dependent Claim
120 words
A FIXING COMPOSITION ADAPTED FOR REESTABLISHING DISULFIDE LINKAGES IN THE TREATMENT OF REDUCED KERATIN, COMPRISING ESSENTIALLY A HOMOGENEOUS MECHANICAL MIXTURE OF FINELY DIVIDED PARTICLES OF ALKALI METAL BROMATE OXIDIZING AGENT, ACID REACTING BUFFERING AGENT AND NOT MORE THAN 5% FINELY DIVIDED ALKALI, BASED ON BROMATE, THE AVERAGE PARTICLE SIZE OF THE ALKALI BEING LESS THAN THE AVERAGE PARTICLE SIZE OF THE OTHER INGREDIENTS, THE AMOUNT OF ALKALI BEING SUFFICIENT TO STABILIZE SAID BROMATE AGAINST DECOMPOSITION IN THE PRESENCE OF MOISTURE AND ACID REACTING SUBSTANCES, BUT NOT MORE THAN AN AMOUNT WHICH WILL IMPART A PH VALUE OF 7 TO A 2% AQUEOUS SOLUTION OF THE MIXTURE, THE AVERAGE MOISTURE CONTENT OF THE MECHANICAL MIXTURE BEING NOT SUBSTANTIALLY GREATER THAN 2%.
References Cited (Backward Citations)
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Cited
US902403A
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US859482A
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US1339783A
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US2223771A
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US2422255A
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US2446227A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-30 | 1956-09-29 | 1957-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-30 | 1960-09-29 | 1961-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-30 | 1964-09-29 | 1965-03-31 | $7700.00 | Window Closed / Lapsed |