Kazumasa Koike

Person

Kanagawa, JP

People

Patents Grantslast 30 patents

Information Patent Grant
Image forming apparatus and wireless communication device
- Patent number 7,734,198
- Issue date Jun 8, 2010
- Ricoh Company, Limited
- Makoto Higashiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Image processing circuit and image processing method that prevent p...
- Patent number 7,295,714
- Issue date Nov 13, 2007
- Ricoh Company, Ltd.
- Kazumasa Koike
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Communication apparatus and image communication method
- Patent number 7,110,133
- Issue date Sep 19, 2006
- Ricoh Company, Ltd.
- Masatake Ohmori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image processing system and method
- Patent number 5,815,605
- Issue date Sep 29, 1998
- Ricoh Company, Ltd.
- Kazumasa Koike
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Image processing apparatus for selectively using MTF correction pro...
- Patent number 5,724,158
- Issue date Mar 3, 1998
- Ricoh Company, Ltd.
- Kazumasa Koike
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optimum line density determining method and system
- Patent number 5,706,096
- Issue date Jan 6, 1998
- Ricoh Company, Ltd.
- Kazumasa Koike
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image processing method and device using such method
- Patent number 5,572,603
- Issue date Nov 5, 1996
- Ricoh Company, Ltd.
- Kazumasa Koike
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Image processing apparatus for converting a multilevel image signal...
- Patent number 5,550,647
- Issue date Aug 27, 1996
- Ricoh Company, Ltd.
- Kazumasa Koike
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image processing apparatus providing a bilevel image signal by chan...
- Patent number 5,452,107
- Issue date Sep 19, 1995
- Ricoh Company, Ltd.
- Kazumasa Koike
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Grant
Image processing unit processing pixel data according to scan line...
- Patent number 5,408,338
- Issue date Apr 18, 1995
- Ricoh Company, Ltd.
- Kazumasa Koike
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Apparatus for producing a bilevel image suitable for a printing cha...
- Patent number 5,386,301
- Issue date Jan 31, 1995
- Ricoh Company, Ltd.
- Kazuhiro Yuasa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Picture processing apparatus
- Patent number 5,243,445
- Issue date Sep 7, 1993
- Ricoh Company, Ltd.
- Kazumasa Koike
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Image processor which converts image with poor resolution into imag...
- Patent number 5,231,519
- Issue date Jul 27, 1993
- Ricoh Company, Ltd.
- Kazumasa Koike
- G06 - COMPUTING CALCULATING COUNTING

Patents Applicationslast 30 patents

Information Patent Application
Image forming apparatus and wireless communication device
- Publication number 20080044195
- Publication date Feb 21, 2008
- Ricoh Company, Limited
- Makoto Higashiyama
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
Image processing circuit and image processing method that prevent p...
- Publication number 20040001640
- Publication date Jan 1, 2004
- Kazumasa Koike
- G06 - COMPUTING CALCULATING COUNTING
Information Patent Application
Communication apparatus and image communication method
- Publication number 20030067626
- Publication date Apr 10, 2003
- Ricoh Company, Ltd.
- Masatake Ohmori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Kazumasa Koike

Person

Patents Grantslast 30 patents

Image forming apparatus and wireless communication device

Image processing circuit and image processing method that prevent p...

Communication apparatus and image communication method

Image processing system and method

Image processing apparatus for selectively using MTF correction pro...

Optimum line density determining method and system

Image processing method and device using such method

Image processing apparatus for converting a multilevel image signal...

Image processing apparatus providing a bilevel image signal by chan...

Image processing unit processing pixel data according to scan line...

Apparatus for producing a bilevel image suitable for a printing cha...

Picture processing apparatus

Image processor which converts image with poor resolution into imag...

Patents Applicationslast 30 patents

Image forming apparatus and wireless communication device

Image processing circuit and image processing method that prevent p...

Communication apparatus and image communication method