Membership
Tour
Register
Log in
Izumi Aiso
Follow
Person
Numazu, JP
People
Overview
Industries
Organizations
People
Information
Impact
Patents Grants
last 30 patents
Information
Patent Grant
Electrophotographic copying apparatus having photoconductor with ma...
Patent number
5,105,222
Issue date
Apr 14, 1992
Ricoh Company, Ltd.
Katsuichi Ohta
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Electrophotographic photoconductor layered element comprising salt...
Patent number
4,871,635
Issue date
Oct 3, 1989
Ricoh Company, Ltd.
Kenji Seki
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information
Patent Grant
Photosensitive material for electrophotography contains organic pho...
Patent number
4,741,981
Issue date
May 3, 1988
Ricoh Co., Ltd.
Junichiro Hashimoto
G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY