John D. Stewart

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Kempton Park, ZA

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Patents Grantslast 30 patents

Information Patent Grant
Production of pigmentary copper phthalocyanine
- Patent number 4,801,638
- Issue date Jan 31, 1989
- Ciba-Geigy Corporation
- Robert Langley
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Production of pigmentary copper phthalocyanine
- Patent number 4,801,634
- Issue date Jan 31, 1989
- Ciba-Geigy Corporation
- Robert Langley
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
Production of pigmentary copper phthalocyanine
- Patent number 4,694,078
- Issue date Sep 15, 1987
- Ciba-Geigy Corporation
- Robert Langley
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...