NU

Nobuhiko Umezawa

Ricoh Company: 13 patents #1,714 of 9,818Top 20%
📍 Gyōda, JP: #45 of 565 inventorsTop 8%
Overall (All Time): #387,668 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
D574426 Toner cartridge Eisuke Hori 2008-08-05
D568928 Toner cartridge Eisuke Hori 2008-05-13
D554695 Toner cartridge Eisuke Hori 2007-11-06
7254357 Method and apparatus for image forming capable of effectively regulating a toner layer, developing mechanism for the apparatus, and a process cartridge provided in the apparatus Yoshitake Shimizu, Takafumi Miyazaki 2007-08-07
7177573 Image forming apparatus with reversely rotated developer bearing members Noriyuki Kimura, Takeroh Kurenuma, Hideyuki Takemoto 2007-02-13
6795674 Developing device for an image forming apparatus Shuuichi Endoh, Osamu Endou, Yoshihiro Abe, Masahide Harada 2004-09-21
6775506 Method and apparatus for image developing capable of effectively forming an even development agent layer Shuuichi Endoh, Osamu Endou 2004-08-10
6643486 Developing device for an image forming apparatus Shuuichi Endoh, Osamu Endou, Yoshihiro Abe, Masahide Harada 2003-11-04
6295438 Method and apparatus for forming an image capable of supplying a proper amount of a lubricant to each image forming section Takatsugu Fujishiro, Nobuto Yokokawa, Atsushi Takehara, Masayuki Ueda 2001-09-25
5953568 Developing unit for an image forming apparatus having a magnetic rotating blade agitator Takatsugu Fujishiro, Hajime Oyama, Motonori Hanada 1999-09-14
5848329 Image forming apparatus having a mounting/dismounting mechanism Yuichi Aoyama, Makoto Obu, Masaki Hiroi, Katsuaki Miyawaki, Masami Hiramatsu 1998-12-08
5797063 Image forming apparatus and cleaning device for transfer material conveyor belt Harumitsu Mashiko 1998-08-18
5374980 Color image forming apparatus utilizing liquid development Nobuaki Kubo, Yuichi Aoyama 1994-12-20