US2708940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition and method of cold waving
Assignee: Gillette Co LLC
•
Filing: 1953-07-27
•
Granted: 1955-05-24
•
Expires: 1973-07-27
Abstract
No abstract record available.
Inventors
- 👤 Mytt Louis E De
- 👤 Agatha M Hannigan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 09:14
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/04; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/30; A61K8/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
THE METHOD OF PERMANENTLY WAVING HUMAN HAIR WHICH COMPRISES TREATING THE HAIR WITH AN AQUEOUS SOLUTION COMPRISING WATER-SOLUBLE MERCAPTAN AND AT LEAST 0.1 M MATERIAL SELECTED FROM THE CLASS CONSISTING OF AMMONIUM CARBONATE AND A MIXTURE OF AMMONIUM CARBONATE WITH AMMONIUM BICARBONATE, THE SOLUTION HAVING AN INITIAL PH IN THE RANGE 7.7 TO 9.0, AND ALLOWING THE HAIR TO REMAIN IN WOUND CONFIGURATION IN CONTACT WITH SAID SOLUTION FOR A PERIOD OF TIME SUFFICIENT TO SOFTEN THE HAIR.
Claim 2
Independent Claim
78 words
THE METHOD OF PERMANENTLY WAVING HUMAN HAIR WHICH COMPRISES TREATING THE HAIR WITH AN AQUEOUS SOLUTION COMPRISING WATER-SOLUBLE MERCAPTAN AND AT LEAST 0.1 M MATERIAL SELECTED FROM THE CLASS CONSISTING OF AMMONIUM CARBONATE AND A MIXTURE OF AMMONIUM CARBONATE WITH AMMONIUM BICARBONATE, THE SOLUTION HAVING AN INITIAL PH IN THE RANGE 7.7 TO 9.0, AND ALLOWING THE HAIR TO REMAIN IN WOUND CONFIGURATION IN CONTACT WITH SAID SOLUTION FOR A PERIOD OF TIME SUFFICIENT TO SOFTEN 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) | 1958-05-23 | 1958-11-22 | 1959-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-23 | 1962-11-22 | 1963-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-23 | 1966-11-22 | 1967-05-24 | $7700.00 | Window Closed / Lapsed |