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Numazu, JP
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last 30 patents
Information
Patent Grant
Electrophotographic toner and image forming method using the toner
Patent number
6,255,028
Issue date
Jul 3, 2001
Ricoh Company, Ltd.
Kumi Hasegawa
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Recording material, method of producing the same and method of recy...
Patent number
5,738,759
Issue date
Apr 14, 1998
Ricoh Company, Ltd.
Hiroshi Kitazawa
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of recycling support material for image-bearing member
Patent number
5,607,534
Issue date
Mar 4, 1997
Ricoh Company, Ltd.
Toshiyuki Kawanishi
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Method of recycling an image carrying medium and an image separatin...
Patent number
5,540,815
Issue date
Jul 30, 1996
Ricoh Company, Ltd.
Masato Igarashi
D21 - PAPER-MAKING PRODUCTION OF CELLULOSE
Information
Patent Grant
Apparatus for removing image forming substance from sheet and sheet...
Patent number
5,534,063
Issue date
Jul 9, 1996
Ricoh Company, Ltd.
Tooru Maruyama
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer-type electrothermographic recording method and recording m...
Patent number
5,347,301
Issue date
Sep 13, 1994
Ricoh Company, Ltd.
Toshiyuki Kawanishi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Thermal image forming equipment forms image directly on image carri...
Patent number
5,300,952
Issue date
Apr 5, 1994
Ricoh Company, Ltd.
Takeo Wada
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Transfer-type electrothermographic recording method and recording a...
Patent number
5,107,282
Issue date
Apr 21, 1992
Ricoh Company, Ltd.
Kunichika Morohoshi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Non-impact electric image transfer recording method
Patent number
4,939,062
Issue date
Jul 3, 1990
Ricoh Company, Ltd.
Toshiyuki Kawanishi
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS