preparing azo dyes on the material

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Patents Grantslast 30 patents

Information Patent Grant
Dye composition for keratinous fibers containing a 2-substituted 4-...
- Patent number 5,047,066
- Issue date Sep 10, 1991
- Kao Corporation
- Tsutomu Mano
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for dyeing human hair with diazo salts and coupling components
- Patent number 4,168,952
- Issue date Sep 25, 1979
- Henkel Kommanditgesellschaft auf Aktien
- Arthur Buhler
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
Process for dyeing human hair with diazo salts and coupling components
- Patent number 4,165,967
- Issue date Aug 28, 1979
- Henkel Kommanditgesellschaft auf Aktien
- Arthur Buhler
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Grant
3582253
- Patent number 3,582,253
- Issue date Jun 1, 1971
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...
Information Patent Grant
2553375
- Patent number 2,553,375
- Issue date May 15, 1951
- D06 - TREATMENT OF TEXTILES OR THE LIKE LAUNDERING FLEXIBLE MATERIALS NOT OTH...