HK

Hiromitsu Koizumi

FI Fujifilm Business Innovation: 16 patents #536 of 5,238Top 15%
Overall (All Time): #300,581 of 4,157,543Top 8%
16
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7912409 Toner cartridge Yasufumi Kayahara, Takuji Matsumoto, Chiharu Nakajima, Mutsumi Kikuchi, Toyohiko Awano +1 more 2011-03-22
7647010 Toner cartridge and image forming apparatus Chiharu Nakajima, Takuji Matsumoto, Toyohiko Awano, Shigeki Nishimura, Mutsumi Kikuchi +1 more 2010-01-12
7643777 Toner cartridge Takuji Matsumoto, Chiharu Nakajima 2010-01-05
7529511 Toner cartridge Yasufumi Kayahara, Takuji Matsumoto, Chiharu Nakajima, Mutsumi Kikuchi, Toyohiko Awano +1 more 2009-05-05
D549274 Toner cartridge Chiharu Nakajima 2007-08-21
D548276 Toner cartridge Chiharu Nakajima 2007-08-07
D548277 Toner cartridge Chiharu Nakajima 2007-08-07
7155148 Image forming apparatus Shigeki Nishimura, Norio Irie, Masayuki Nishimura, Takuji Matsumoto, Naomasa Okimura 2006-12-26
6785494 Image formation apparatus and charger used therewith Kazuya Yamanoi, Shigeo Ohno, Shigeki Nishimura, Yasuyuki Tsutsumi, Ryuichi Yamamoto +5 more 2004-08-31
6738590 Image forming apparatus with detachable image forming unit assembly Naomasa Okimura, Takeshi Okoshi 2004-05-18
6594461 Charger and image formation apparatus using the charger Shigeo Ohno, Ryuichi Yamamoto, Yusuke Kitagawa, Kazuya Yamanoi, Tadashi Kiyama +5 more 2003-07-15
D458299 Image forming apparatus Takeshi Okoshi 2002-06-04
6069646 Image forming apparatus providing frame support for an optical scanning unit Kouichi Okabe, Yasuhide Saito 2000-05-30
5287143 Image forming apparatus with moveable cover Shoji HIROTA 1994-02-15
5268724 Transfer apparatus providing improved transfer material guidance along a feed path to an electrophotographic image carrier Yukinori Sezaki 1993-12-07
5267001 Image forming cartridge Makoto Kanai 1993-11-30