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Masakatsu Shimoda
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Tokyo, JP
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last 30 patents
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Patent Grant
Organic silicone quaternary ammonium salt, producing method thereof...
Patent number
6,120,962
Issue date
Sep 19, 2000
Ricoh Company, Ltd.
Masakatsu Shimoda
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Organosilicon compound, producing method thereof and toner and dry-...
Patent number
5,595,852
Issue date
Jan 21, 1997
Ricoh Company, Ltd.
Masakatsu Shimoda
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Positively-chargeable single-layered type electrophotographic photo...
Patent number
5,492,784
Issue date
Feb 20, 1996
Ricoh Company, Ltd.
Masao Yoshikawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor
Patent number
5,486,438
Issue date
Jan 23, 1996
Ricoh Company, Ltd.
Masayuki Shoshi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Optical information recording medium using bisazo or trisazo compounds
Patent number
5,441,844
Issue date
Aug 15, 1995
Ricoh Company, Ltd.
Masakatsu Shimoda
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...
Information
Patent Grant
Electrophotographic photoconductor
Patent number
5,387,487
Issue date
Feb 7, 1995
Ricoh Company, Ltd.
Masayuki Shoshi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Electrophotographic photoconductor
Patent number
5,350,653
Issue date
Sep 27, 1994
Ricoh Company, Ltd.
Masayuki Shoshi
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Optical information recording media and bisazo compounds for use th...
Patent number
5,312,906
Issue date
May 17, 1994
Ricoh Company, Ltd.
Masakatsu Shimoda
C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...