US2869559A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-volatile mercaptan and hydroxyamine impregnated end wrap and method of use
Assignee: Procter and Gamble Co
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Filing: 1957-10-07
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Granted: 1959-01-20
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Expires: 1977-10-07
Abstract
No abstract record available.
Inventors
- 👤 Robert S Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:31
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/46; A61K8/02; A61K8/0208; A61K8/40; A61K8/41; A61Q; A61Q5/00; A61Q5/04
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
111 words
THE METHOD OF IMPARTING A WAVE TO HAIR WITHOUT THE USE OF HEAT WHICH COMPRISES THE STEPS OF FORMING THE HAIR INTO TRESSES, WRAPPING ABOUT EACH TRESS A PERMEABLE, PLIABLE SHEET CONTAINING FROM ABOUT 2% TO ABOUT 10% MOISTURE, SAID SHEET BEING IMPREGNATED WITH A SUBSTANTIALLY NON-VOLATILE, WATER-SOLUBLE, KERATIN-REDUCING COMPOSITION, SAID COMPOSITION CONTAINING A MERCAPTAN SELECTED FROM THE GROUP CONSISTING OF MERCAPTO-ACETIC ACID, MERCAPTO-PROPIONIC ACID, MERCAPTO-BUTYRIC ACID, MERCAPTO-CAPROIC ACID AND WATER-SOLUBLE SALTS OF THESE DISTRIBUTED THROUGHOUT SAID SHEET IN AN AMOUNT EQUIVALENT TO FROM ABOUT .003 TO ABOUT .020 GRAM OF THIOGLYCOLIC ACID PER SQUARE INCH OF SAID SHEET AND A SUBSTANTIALLY NONVOLATILE HYDROXYAMINE ALKALINE MATERIAL, SAID HYDROXYAMINE HAVING THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-19 | 1962-07-21 | 1963-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-19 | 1966-07-21 | 1967-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-19 | 1970-07-21 | 1971-01-20 | $7700.00 | Window Closed / Lapsed |