US2688972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for permanently waving human hair
Assignee: Gillette Co LLC
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Filing: 1951-11-20
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Granted: 1954-09-14
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Expires: 1971-11-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:40
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
METHOD OF IMPARTING A PERMANENT WAVE TO HUMAN HAIR COMPRISING APPLYING TO THE HAIR A SOLUTION OF A CHEMICAL AGENT CAPABLE OF SPLITTING THE DISULFIDE LINKAGES IN HAIR KERATIN, PERMITTING THE SOLUTION TO ACT ON THE HAIR WITH THE LATTER IN WOUND CURLED CONDITION TO SPLIT SAID LINKAGES AND SOFTEN THE HAIR, DILUTING THE SOLUTION IN SITU ON THE WOUND CURLED HAIR PRIOR TO FULL DEVELOPMENT OF THE FINAL WAVE TO PRECLUDE FURTHER SUBSTANTIAL CHEMICAL ACTION OF THE AGENT ON THE CURLED HAIR, MAINTAINING THE HAIR IN WOUND FORM BEFORE FULL DEVELOPMENT OF THE WAVE FOR A PERIOD OF TIME SUFFICIENT TO INSURE SUBSTANTIAL AERIAL OXIDATION OF THE HAIR AND TO FURTHER AND FULLY DEVELOP THE WAVE, AND WHEN THE WAVE IS FULLY PERMANENT AND IN FINAL FORM, UNWINDING THE HAIR.
Claim 2
Dependent Claim
131 words
METHOD OF IMPARTING A PERMANENT WAVE TO HUMAN HAIR COMPRISING APPLYING TO THE HAIR A SOLUTION OF A CHEMICAL AGENT CAPABLE OF SPLITTING THE DISULFIDE LINKAGES IN HAIR KERATIN, PERMITTING THE SOLUTION TO ACT ON THE HAIR WITH THE LATTER IN WOUND CURLED CONDITION TO SPLIT SAID LINKAGES AND SOFTEN THE HAIR, DILUTING THE SOLUTION IN SITU ON THE WOUND CURLED HAIR PRIOR TO FULL DEVELOPMENT OF THE FINAL WAVE TO PRECLUDE FURTHER SUBSTANTIAL CHEMICAL ACTION OF THE AGENT ON THE CURLED HAIR, MAINTAINING THE HAIR IN WOUND FORM BEFORE FULL DEVELOPMENT OF THE WAVE FOR A PERIOD OF TIME SUFFICIENT TO INSURE SUBSTANTIAL AERIAL OXIDATION OF THE HAIR AND TO FURTHER AND FULLY DEVELOP THE WAVE, AND WHEN THE WAVE IS FULLY PERMANENT AND IN FINAL FORM, UNWINDING THE HAIR.
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) | 1957-09-13 | 1958-03-15 | 1958-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-13 | 1962-03-15 | 1962-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-13 | 1966-03-15 | 1966-09-14 | $7700.00 | Window Closed / Lapsed |