US3236734A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing hair with aromatic aminohydroxyl derivatives
Assignee: L'Oréal SA
•
Filing: 1964-02-06
•
Granted: 1966-02-22
•
Expires: 1984-02-06
Abstract
No abstract record available.
Inventors
- 👤 Charle Roger
- 👤 Lantz Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:10
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/30; D06P3/305; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/41; A61K8/413; A61Q; A61Q5/00; A61Q5/10; Y; Y10; Y10S; Y10S424/00; Y10S424/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS OF DYEING HAIR WHICH COMPRISES THE STEPS OF IMPREGNATING THE HAIR WITH A SOLUTION CONTAINING THE WATER SOLUBLE ACID SALT OF THE COMPOUND HAVING THE FORMULA: 1,3-DI(HO-),4-(R-NH-)BENZENE IN WHICH R DESIGNATES A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, PHENYL, LOWER ALKYL PHENYL AND CYCLOHEXYL.
Claim 2
Dependent Claim
50 words
A PROCESS OF DYEING HAIR WHICH COMPRISES THE STEPS OF IMPREGNATING THE HAIR WITH A SOLUTION CONTAINING THE WATER SOLUBLE ACID SALT OF THE COMPOUND HAVING THE FORMULA: 1,3-DI(HO-),4-(R-NH-)BENZENE IN WHICH R DESIGNATES A MONOVALENT RADICAL SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, PHENYL, LOWER ALKYL PHENYL AND CYCLOHEXYL.
References Cited (Backward Citations)
US3011858A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-21 | 1969-08-23 | 1970-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-21 | 1973-08-23 | 1974-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-21 | 1977-08-23 | 1978-02-22 | $7700.00 | Window Closed / Lapsed |