Dyeing human hair and composition for including an oxidation dye and coupler thereof

Assignee: L'Oréal SA

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Filing: 1968-12-12

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Granted: 1972-07-04

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Expires: 1988-12-12

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Abstract

Abstract A GROUP OF COUPLING AGENTS, OF WHICH THE FOLLOWING ARE REPRESENTATIVE: 3-DIMETHYLAMINO-PHENYLUREA, 3-DIMETHYLAMINO-PHENYLTHIOUREA, (3-HYDROXY-6-METHOXY)-PHENYLUREA, (3-HYDROXY-6-METHOXY)-PHENYLTHIOUREA, (2,4-DEI METHYL-3-HYDROXY-PHENYLUREA, (2,4-DIMETHYL-3-HYDROXY)-PHENYLTHIOUREA, AND (4-METHYL-3-HYDROXY)PHENYLTHIOUREA. THE INVENTION ALSO INCLUDES THESE COUPLERS IN ASSOCIATION WITH OXIDATION DYES, AND A METHOD OF DYEING HAIR USING SAID COMPOSITIONS.

Inventors

👤 Gregoire Kalopissis
👤 Jean Gascon
👤 Jacqueline Gallien
👤 Andree Bugaut
👤 Hubert Gaston-Breton

Bibliographic Details

Application Number —

Jurisdiction US

Data Source google_patents

Last Synchronized 2026-11-02 06:25

CPC Classifications

C; C07; C07C; C07C335/00; C07C335/04; C07C335/16; C07C335/18; A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/42; A61K8/46; A61K8/49; A61K8/494; A61Q; A61Q5/00; A61Q5/10; C07C275/00; C07C275/28; C07C275/32; C07C275/34

Claims Analysis

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USPTO Annuity & Maintenance Windows

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1975-07-04	1976-01-03	1976-07-04	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1979-07-04	1980-01-03	1980-07-04	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1983-07-04	1984-01-03	1984-07-04	$7700.00	Window Closed / Lapsed

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