US2540980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and composition for treating keratinous material
Assignee: RAYMOND LAB Inc
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Filing: 1946-10-16
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Granted: 1951-02-06
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Expires: 1966-10-16
Abstract
No abstract record available.
Inventors
- 👤 Beste Marion Den
- 👤 Raymond E Reed
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:57
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
101 words
A METHOD OF PREMANENTLY CHANGING THE CONFIGURATION OF HUMAN HAIR UPON THE HEAD WITHOUT APPRECIABLE DEMAGE TO THE HAIR STRUCTURE, WHICH COMPRISES IMPARTING THE DESIRED CONFIGURATIN TO THE HAIR, SUBJECTING THE HAIR TO TREATMENT WITH A KERATIN REDUCING AGENT IN THE PRESENCE OF AN OXIDATION CATALYST, SAID OXIDATION CATALYST BEING PRESENT IN THE HAIR AT LEAST FROM THE COMMENCEMENT OF SAID TREATMENT, UNTIL THE DESIRED CONFIGURATION IS OBTAINED AND THEN EXPOSING THE HAIR TO ATMOSPHERIC OXYGEN TO OXIDIZE THE REDUCING AGENT BY THE ACTION OF THE ATMOSPHERIC OXYGEN IN THE PRESENCE OF THE OXIDATION CATALYST AND THEREBY FIX THE DESIRED CONFIGURATION.
Claim 2
Independent Claim
101 words
A METHOD OF PREMANENTLY CHANGING THE CONFIGURATION OF HUMAN HAIR UPON THE HEAD WITHOUT APPRECIABLE DEMAGE TO THE HAIR STRUCTURE, WHICH COMPRISES IMPARTING THE DESIRED CONFIGURATIN TO THE HAIR, SUBJECTING THE HAIR TO TREATMENT WITH A KERATIN REDUCING AGENT IN THE PRESENCE OF AN OXIDATION CATALYST, SAID OXIDATION CATALYST BEING PRESENT IN THE HAIR AT LEAST FROM THE COMMENCEMENT OF SAID TREATMENT, UNTIL THE DESIRED CONFIGURATION IS OBTAINED AND THEN EXPOSING THE HAIR TO ATMOSPHERIC OXYGEN TO OXIDIZE THE REDUCING AGENT BY THE ACTION OF THE ATMOSPHERIC OXYGEN IN THE PRESENCE OF THE OXIDATION CATALYST AND THEREBY FIX THE DESIRED CONFIGURATION.
References Cited (Backward Citations)
US57649A
Cited
FR692981A
Cited
US2261094A
Cited
US2180262A
Cited
US2193173A
Cited
US2181121A
Cited
US2376186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |