US2817342A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of permanently reshaping a keratin-containing substance
Assignee: Colgate Palmolive Co
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Filing: 1953-12-17
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Granted: 1957-12-24
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Expires: 1973-12-17
Abstract
No abstract record available.
Inventors
- 👤 Henkin Hyman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:06
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/64; A61K8/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
THE METHOD OF PERMANENTLY WAVING HAIR AT ROOM TEMPERATURES WHICH COMPRISING RELAXING THE HAIR BY WETTING IT WITH A SOLUTION COMPRISING AN ACID SULFITE ADJUSTED TO A PH WITHIN THE RANGE OF ABOUT 6.0 TO 7.0 TO SPLIT AT LEAST SOME OF THE CYSTINE LINKAGES OF THE KERATIN OF THE HAIR, DEFORMING THE HAIR UPON A CURLER; AND SETTING THE WAVE RESAULTING FROM SAID DEFORMATION, BY RESTORING CYSTINE LINGAGES AND KERATIN STRUCTURE BY APPLYING TO THE CURLED RELAXED HAIR NON-ALKALINE, NON-OXIDIZING SUBSTANCES COMPRISING UREA AND UREASE IN AMOUNTS SUFFICIENT TO ALLOW THE GRADUAL GENERATION, IN SITU, OF SUFFICIENT AMMONIA TO INCREASE THE PH OF THE MATERIALS CONTACTING THE HAIR TO ABOUT 8.0 TO 9.0.
Claim 2
Independent Claim
114 words
THE METHOD OF PERMANENTLY WAVING HAIR AT ROOM TEMPERATURES WHICH COMPRISING RELAXING THE HAIR BY WETTING IT WITH A SOLUTION COMPRISING AN ACID SULFITE ADJUSTED TO A PH WITHIN THE RANGE OF ABOUT 6.0 TO 7.0 TO SPLIT AT LEAST SOME OF THE CYSTINE LINKAGES OF THE KERATIN OF THE HAIR, DEFORMING THE HAIR UPON A CURLER; AND SETTING THE WAVE RESAULTING FROM SAID DEFORMATION, BY RESTORING CYSTINE LINGAGES AND KERATIN STRUCTURE BY APPLYING TO THE CURLED RELAXED HAIR NON-ALKALINE, NON-OXIDIZING SUBSTANCES COMPRISING UREA AND UREASE IN AMOUNTS SUFFICIENT TO ALLOW THE GRADUAL GENERATION, IN SITU, OF SUFFICIENT AMMONIA TO INCREASE THE PH OF THE MATERIALS CONTACTING THE HAIR TO ABOUT 8.0 TO 9.0.
References Cited (Backward Citations)
US1716347A
Cited
US2033180A
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GB443359A
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GB453700A
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GB552285A
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GB552286A
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FR973675A
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US2540980A
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US2526614A
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CH270698A
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FR1004940A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |