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last 30 patents
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Patent Grant
Image processing method and apparatus for achieving tone reproducti...
Patent number
6,546,131
Issue date
Apr 8, 2003
Canon Kabushiki Kaisha
Yoshito Mizoguchi
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image forming apparatus for having an arbitrary number of screen li...
Patent number
6,121,997
Issue date
Sep 19, 2000
Canon Kabushiki Kaisha
Satoru Fukushima
B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information
Patent Grant
Image forming apparatus with pulse width modulated laser driver
Patent number
5,742,323
Issue date
Apr 21, 1998
Canon Kabushiki Kaisha
Satoru Fukushima
H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information
Patent Grant
Image forming apparatus which forms halftone images mixed with char...
Patent number
5,467,196
Issue date
Nov 14, 1995
Canon Kabushiki Kaisha
Satoru Fukushima
H04 - ELECTRIC COMMUNICATION TECHNIQUE