US2766760A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair waving with borohydrides
Assignee: Gillette Co LLC
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Filing: 1953-09-15
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Granted: 1956-10-16
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Expires: 1973-09-15
Abstract
No abstract record available.
Inventors
- 👤 Bogaty Herman
- 👤 Alfred E Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:01
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A61K; A61K8/00; A61K8/18; A61K8/19
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
83 words
THE METHOD OF PERMANENTLY WAVING HUMAN HAIR WHICH COMPRISES APPLYING TO THE HAIR AN AQUEOUS SOLUTION CONTAINING SODIUM BOROHYDRIDE AT A MOLARITY FROM 0.5 TO 1.6, MAINTAINING THE HAIR IN CURLED CONFIGURATION IN CONTACT WITH SAID SOLUTION FOR A PERIOD OF TIME SUFFICIENT TO SPLIT THE DISULFIDE LINKAGES OF THE HAIR KERATIN AND PERMIT SUBSTANTIAL PLASTIC FLOW OF THE HAIR, AND SUBJECTING THE HAIR IN CURLED CONFIGURATION TO THE ACTION OF AN OXIDIZING AGENT TO RESTORE THE DISULFIDE BONDS OF THE HAIR KERATIN.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-16 | 1960-04-16 | 1960-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-16 | 1964-04-16 | 1964-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-16 | 1968-04-16 | 1968-10-16 | $7700.00 | Window Closed / Lapsed |