US2615828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions for treating keratin-containing materials
Assignee: Procter and Gamble Co
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Filing: 1951-02-15
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Granted: 1952-10-28
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Expires: 1971-02-15
Abstract
No abstract record available.
Inventors
- 👤 John W Haefele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:52
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/19; A61K8/23; A61Q; A61Q5/00; A61Q5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
A NEW COMPOSITION COMPRISING AN AQUEOUS SOLUTION OF PH 7 TO 10.5 OF THE EQUILIBRIUM REACTION MIXTURE OF (A) WATER-SOLUBLE MERCAPTAN OF THE GENERAL FORMULA RSH AND (B) WATER-SOLUBLE SALT OF THIOSULFURIC ACID OF THE GENERAL FORMULA R''SSO3H WHEREIN EACH OF THE SYMBOLS, R AND R'', REPRESENTS A MONOVALENT ORGANIC RADICAL WHICH IS FREE OF THE CONCOMITANT PRESENCE OF A CARBOXYL GROUP AND AN AMINO GROUP, AND IN WHICH THE FREE VALENCE IS ON AN ALIPHATIC CARBON ATOM, THE TOTAL POTENTIAL CONCENTRATION OF MERCAPTAN IN SAID SOLUTION BEING BETWEEN 0.05 AND 2.0 MOLAL.
Claim 2
Dependent Claim
93 words
A NEW COMPOSITION COMPRISING AN AQUEOUS SOLUTION OF PH 7 TO 10.5 OF THE EQUILIBRIUM REACTION MIXTURE OF (A) WATER-SOLUBLE MERCAPTAN OF THE GENERAL FORMULA RSH AND (B) WATER-SOLUBLE SALT OF THIOSULFURIC ACID OF THE GENERAL FORMULA R''SSO3H WHEREIN EACH OF THE SYMBOLS, R AND R'', REPRESENTS A MONOVALENT ORGANIC RADICAL WHICH IS FREE OF THE CONCOMITANT PRESENCE OF A CARBOXYL GROUP AND AN AMINO GROUP, AND IN WHICH THE FREE VALENCE IS ON AN ALIPHATIC CARBON ATOM, THE TOTAL POTENTIAL CONCENTRATION OF MERCAPTAN IN SAID SOLUTION BEING BETWEEN 0.05 AND 2.0 MOLAL.
References Cited (Backward Citations)
GB453700A
Cited
US2180262A
Cited
US2238672A
Cited
US2389755A
Cited
US2479382A
Cited
US2418664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |