US3712790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2,6-dimethyl phenol couplers and oxidation dyes for dyeing human hair
Assignee: L'Oréal SA
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Filing: 1969-08-07
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Granted: 1973-01-23
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Expires: 1989-08-07
Abstract
Abstract OXIDATION DYE COUPLING COMPOUNDS FOR USE IN DYEING LIVE HUMAN HAIR HAVING THE FORMULA: 2,6-DI(H3C-),3-(R-NH-)PHENOL
Inventors
- 👤 G Kalopissis
- 👤 A Bugaut
- 👤 Breton H Gaston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:50
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/415; A61Q; A61Q5/00; A61Q5/10
Claims Analysis
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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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |