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Yuuji Kitajima
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Kawasaki, JP
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last 30 patents
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Patent Grant
Toner supplying device, method and image forming apparatus using th...
Patent number
6,151,471
Issue date
Nov 21, 2000
Ricoh Company, Ltd.
Masasumi Yahata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Toner supplying device, toner container therefor and image forming...
Patent number
6,097,903
Issue date
Aug 1, 2000
Ricoh Company, Ltd.
Masasumi Yahata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Tower supplying device and image forming apparatus using same toner...
Patent number
6,091,912
Issue date
Jul 18, 2000
Ricoh Company, Ltd.
Yuuji Kitajima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Powder pump and image forming apparatus having the powder pump and...
Patent number
5,950,055
Issue date
Sep 7, 1999
Ricoh Company, Ltd.
Masazumi Yahata
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY