Patent US3011858A successfully refreshed from Google Patents.
US3011858A
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US
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Process for dyeing hair, fur and other keratinic fibers with dihydroxyaminobenzenes
Assignee: L'Oréal SA
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Filing: 1959-04-09
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Granted: 1961-12-05
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Expires: 1979-04-09
Abstract
No abstract record available.
Inventors
- 👤 Lantz Robert
- 👤 Kalopissis Gregoire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:14
CPC Classifications
A; A61; A61Q; A61Q5/00; A61Q5/10; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/415; D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/30; D06P3/305
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A PROCESS FOR DYEING LIVE HUMAN HAIR AND OTHER KERATINOUS FIBERS WHICH PROCESS COMPRISES IMPREGNATING SAID FIBERS WITH AN AQUEOUS SOLUTION OF AT LEAST ONE DIHYDROXYAMINOBENZENE SELECTED FROM THE GROUP CONSISTING OF 2.5 DIHYDROXYAMOBENZENE, 2,4 DIHYDROXYAMINOBENZENE, 3.4 DIHYDROXYAMINOBENZENE AND ACID ADDITION SALTS THEREOF, SAID SOLUTION BEING BROUGHT TO A PH BETWEEN 2 AND 10 BY ADDITION OF A BASE CHOSEN FROM THE GROUP CONSISTING OF SODIUM CARBONATE, SODIUM BICARBONATE AND SODIUM ACETATE, THE KERATINOUS FIBERS BEING THEREAFTER SUBJECTED TO THE ACTION OF AN OXIDIZING AGENT.
Claim 2
Dependent Claim
85 words
A PROCESS FOR DYEING LIVE HUMAN HAIR AND OTHER KERATINOUS FIBERS WHICH PROCESS COMPRISES IMPREGNATING SAID FIBERS WITH AN AQUEOUS SOLUTION OF AT LEAST ONE DIHYDROXYAMINOBENZENE SELECTED FROM THE GROUP CONSISTING OF 2.5 DIHYDROXYAMOBENZENE, 2,4 DIHYDROXYAMINOBENZENE, 3.4 DIHYDROXYAMINOBENZENE AND ACID ADDITION SALTS THEREOF, SAID SOLUTION BEING BROUGHT TO A PH BETWEEN 2 AND 10 BY ADDITION OF A BASE CHOSEN FROM THE GROUP CONSISTING OF SODIUM CARBONATE, SODIUM BICARBONATE AND SODIUM ACETATE, THE KERATINOUS FIBERS BEING THEREAFTER SUBJECTED TO THE ACTION OF AN OXIDIZING AGENT.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |