Patent US2869559A successfully refreshed from Google Patents.
US2869559A
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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
2026-10-26 13:23
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
References Cited (Backward Citations)
US1531291A
Cited
US1607981A
Cited
US1637469A
Cited
US1776820A
Cited
US2115156A
Cited
US2350178A
Cited
GB550746A
Cited
US2446227A
Cited
GB699464A
Cited
US2719815A
Cited
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 |