the tetrazo component being a derivative of a diaryl ketone or benzil

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C09B35/233

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CCHEMISTRY METALLURGY C09Paints, dyes C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES MORDANTS LAKES C09B35/00Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling

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C09B35/233the tetrazo component being a derivative of a diaryl ketone or benzil

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Patents Grantslast 30 patents

Information Patent Grant
Electrophotographic photoconductor, process for forming an image, i...
- Patent number 7,175,958
- Issue date Feb 13, 2007
- Ricoh Company, Ltd.
- Masayuki Shoshi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic photoconductor, process for forming an image, i...
- Patent number 6,849,367
- Issue date Feb 1, 2005
- Ricoh Company, Ltd.
- Masayuki Shoshi
- C07 - ORGANIC CHEMISTRY
Information Patent Grant
Electrophotographic photoreceptor having a bisazo photoreceptive layer
- Patent number 5,162,181
- Issue date Nov 10, 1992
- Konica Corporation
- Shingo Fujimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photoreceptor for electrophotography
- Patent number 4,921,770
- Issue date May 1, 1990
- Tetsuo Murayama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Photosensitive material containing disazo compound for use in elect...
- Patent number 4,708,921
- Issue date Nov 24, 1987
- Ricoh Co., Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Tetrazonium salt compound, disazo compound, method for preparing th...
- Patent number 4,619,878
- Issue date Oct 28, 1986
- Ricoh Co., Ltd.
- Mitsuru Hashimoto
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
Electrophotographic photoconductor, process for forming an image, i...
- Publication number 20050112487
- Publication date May 26, 2005
- Masayuki Shoshi
- C07 - ORGANIC CHEMISTRY
Information Patent Application
Electrophotographic photoconductor, process for forming an image, i...
- Publication number 20030190540
- Publication date Oct 9, 2003
- Masayuki Shoshi
- C07 - ORGANIC CHEMISTRY