the tetrazo component being a naphthalene derivative

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Patents Grantslast 30 patents

Information Patent Grant
Light-fast disazo dyestuffs
- Patent number 5,844,101
- Issue date Dec 1, 1998
- Bayer Aktiengesellschaft
- Klaus Kunde
- D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information Patent Grant
Dichroic azo dyes
- Patent number 5,589,100
- Issue date Dec 31, 1996
- Hercules Incorporated
- Robert P. Grasso
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Arylazo and poly(arylazo) dyes having at least one core radical sel...
- Patent number 5,326,865
- Issue date Jul 5, 1994
- Hercules Incorporated
- Robert P. Grasso
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Utilization of dyes for liquid crystal displays
- Patent number 4,137,193
- Issue date Jan 30, 1979
- BBC Brown, Boveri & Company, Limited
- Maged A. Osman
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
3454552
- Patent number 3,454,552
- Issue date Jul 8, 1969
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
2780619
- Patent number 2,780,619
- Issue date Feb 5, 1957
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information Patent Grant
1789134
- Patent number 1,789,134
- Issue date Jan 13, 1931
- C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...