US3578387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing hair while simultaneously lightening its color
Assignee: L'Oréal SA
•
Filing: 1967-02-13
•
Granted: 1971-05-11
•
Expires: 1987-02-13
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS FOR SIMULTANEOUSLY DYEING HAIR AND LIGHTENING ITS COLOR AND TO SPECIFIC COMPOSITIONS FOR USE IN CARRYING OUT THAT PROCESS. THESE COMPOSITIONS CONTAIN IN COMBINATION A WATER-SOLUBLE DYE WHICH IS EITHER AN ANTHRAQUINONE DYE OR A NITRATED DERIVATIVE OF BENZENE, TOGETHER WITH AN AZO DYE OR AN ANTHRAQUINONE DYE WHICH ARE INSOLUBLE IN WATER, AND HYDROGEN PEROXIDE.
Inventors
- 👤 Charles Zviak
- 👤 Giuliana Ghilardi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:57
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/418; A61Q; A61Q5/00; A61Q5/08; A61Q5/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |