JH

Jun Hirabayashi

Canon: 54 patents #619 of 19,416Top 4%
Tdk: 19 patents #283 of 3,796Top 8%
NT Novel Crystal Technology: 5 patents #2 of 20Top 10%
TA Tamura: 5 patents #25 of 193Top 15%
WI Wako Pure Chemical Industries: 2 patents #86 of 377Top 25%
SE Seikagaku: 1 patents #133 of 253Top 55%
UT University Of Tsukuba: 1 patents #70 of 344Top 25%
JM J-Oil Mills: 1 patents #22 of 66Top 35%
KU Keio University: 1 patents #190 of 781Top 25%
NM National Center For Global Health And Medicine: 1 patents #14 of 49Top 30%
NU National University Corporation Shizuoka University: 1 patents #62 of 225Top 30%
Fujitsu Limited: 1 patents #14,843 of 24,456Top 65%
Overall (All Time): #20,033 of 4,157,543Top 1%
85
Patents All Time

Issued Patents All Time

Showing 76–85 of 85 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 Harumi Ishiyama, Yukio Nagase, Yasunori Chigono 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, Harumi Ishiyama 2000-10-03
6118965 Image forming apparatus having a contact-type charger Harumi Ishiyama, Yasunori Chigono 2000-09-12
6081681 Charging device, charging method, process cartridge and image forming apparatus Yukio Nagase, Harumi Ishiyama, Yasunori Chigono 2000-06-27
6038418 Charging method and a charging device for charging a member to be charged by a flexible charging member Yasunori Chigono, Harumi Ishiyama 2000-03-14
6038420 Charging device, charging method and image forming apparatus Harumi Ishiyama, Yasunori Chigono 2000-03-14
5933184 Color image forming device Masahide Ishigami, Shunji Kitagawa, Kouichi Takemura, Satoru Kobayashi 1999-08-03
5815777 Image forming apparatus 1998-09-29
5774769 Charging apparatus and image forming apparatus Yasunori Chigono 1998-06-30
5729802 Contact charger for charging a photosensitive member Nobuyuki Ito, Harumi Ishiyama, Tadashi Furuya, Yasunori Chigono, Seiji Mashimo 1998-03-17