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Akiyo Nakajima
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Yokohama, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Electrophotographic drum-shaped photoconductor and image forming me...
Patent number
6,706,459
Issue date
Mar 16, 2004
Ricoh Company, Ltd.
Narihito Kojima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic drum-shaped photoconductor and image forming me...
Patent number
6,562,529
Issue date
May 13, 2003
Ricoh Company, Ltd.
Narihito Kojima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Unit for imparting lubricity to electrophotographic photoconductor,...
Patent number
6,363,237
Issue date
Mar 26, 2002
Ricoh Company, Ltd.
Hiroshi Nagame
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus and device for applying a lubricant to an i...
Patent number
6,160,977
Issue date
Dec 12, 2000
Ricoh Company, Ltd.
Ryuta Takeichi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Multi-functional contact-type charging unit and image transfer unit
Patent number
6,118,964
Issue date
Sep 12, 2000
Ricoh Company, Ltd.
Narihito Kojima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
6,060,205
Issue date
May 9, 2000
Ricoh Company, Ltd.
Ryuta Takeichi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Image forming apparatus
Patent number
6,014,532
Issue date
Jan 11, 2000
Ricoh Company, Ltd.
Ryuta Takeichi
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Patents Applications
last 30 patents
Information
Patent Application
Electrophotographic drum-shaped photoconductor and image forming me...
Publication number
20030165757
Publication date
Sep 4, 2003
Narihito Kojima
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY