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US3591323A Expired / Lapsed US ⏱️ 0.0 years remaining

New hair dyeing solution

Assignee: L'Oréal SA
•
Filing: 1966-02-07
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Granted: 1971-07-06
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Expires: 1986-02-07
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Abstract

Abstract A COMPOSITION FOR DYEING KERATINIC FIBERS COMPRISING EFFECTIVE AMOUNTS OF AROMATIC PARADIAMINE OF THE FORMULA 1,4-DI(H2N-),2,6-DI(R-),3-(CH3-O-)BENZENE IN WHICH R AND R'' EACH REPRESENT A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND METHYL, BUT R'' MUST BE METHYL WHEN R IS METHYL, AND META-AMINO-PHENOL WHICH SERVES AS A COUPLING SUBSTANCE OF THE FORMULA 3-(R2-NH-),4-CH3,6-R1-PHENOL IN WHICH R1 REPRESENTS A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND HYDROGEN AND R2 REPRESENTS A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, CARBOMAYLMETHYL AND DIETHYL CARBAMYLMETHYL, BUT R1 MUST BE CHLORINE WHEN R2 IS HYDROGEN, AND THE METHOD OF DYEING HAIR WITH THIS COMPOSITION.

Inventors

  • 👤 Gregoire Kalopissis
  • 👤 Andree Bugaut

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 10:02
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/42; A61Q; A61Q5/00; A61Q5/10

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-07-05 1975-01-04 1975-07-06 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-07-05 1979-01-04 1979-07-06 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-07-05 1983-01-04 1983-07-06 $7700.00 Window Closed / Lapsed

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