HI

Harumi Ishiyama

Canon: 41 patents #1,035 of 19,416Top 6%
Overall (All Time): #77,007 of 4,157,543Top 2%
41
Patents All Time

Issued Patents All Time

Showing 26–41 of 41 patents

Patent #TitleCo-InventorsDate
6134407 Charging apparatus for charging a moving member to be charged including an elastic rotatable member carrying electroconductive particles on the surface thereof Yukio Nagase, Yasunori Chigono, Jun Hirabayashi 2000-10-17
6128456 Image forming apparatus having a charging member applying an electric charge through electrically conductive or electroconductive particles to the surface of a photosensitive or image bearing member Yasunori Chigono, Yukio Nagase, Jun Hirabayashi 2000-10-03
6118965 Image forming apparatus having a contact-type charger Jun Hirabayashi, Yasunori Chigono 2000-09-12
6081681 Charging device, charging method, process cartridge and image forming apparatus Yukio Nagase, Yasunori Chigono, Jun Hirabayashi 2000-06-27
6061539 Charging member, charging device and image forming apparatus Yasushi Sato, Hideyuki Yano, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo 2000-05-09
6038420 Charging device, charging method and image forming apparatus Jun Hirabayashi, Yasunori Chigono 2000-03-14
6038418 Charging method and a charging device for charging a member to be charged by a flexible charging member Yasunori Chigono, Jun Hirabayashi 2000-03-14
6002900 Image forming method, image forming apparatus and process cartridge 1999-12-14
5930566 Electrostatic charging apparatus having conductive particles with a multi-peaked size distribution 1999-07-27
5822659 Image forming apparatus and process cartridge detachably mountable relative to an image forming apparatus 1998-10-13
5754927 Magnetic charging brush having particular magnetic fields Tadashi Furuya, Takeo Yamamoto, Yasunori Chigono, Seiji Mashimo 1998-05-19
5729802 Contact charger for charging a photosensitive member Jun Hirabayashi, Nobuyuki Ito, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo 1998-03-17
5708932 Charging system and electrophotography apparatus Hideyuki Yano, Akio Maruyama, Yomishi Toshida, Noboru Kashimura, Kazushige Nakamura +2 more 1998-01-13
5666192 Charging member and image forming apparatus Seiji Mashimo, Yasushi Sato, Tadashi Furuya 1997-09-09
5659852 Image forming method, image forming apparatus and process cartridge Yasunori Chigono, Tadashi Furuya, Seiji Mashimo 1997-08-19
5579095 Charging device Hideyuki Yano, Tadashi Furuya, Seiji Mashimo 1996-11-26