HK

Hiroaki Kumagai

Canon: 9 patents #6,722 of 19,416Top 35%
Aisin Seiki Kabushiki Kaisha: 2 patents #1,427 of 3,782Top 40%
OC Oki Electric Industry Co.: 1 patents #1,459 of 2,807Top 55%
Overall (All Time): #377,401 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
10767657 Axial alignment structure for fluid pressure pump Hiroomi Ogawa 2020-09-08
10533579 Electric pump and mounting structure of electric pump Kentaro Mochizuki, Shuji Hattori 2020-01-14
6847096 Semiconductor wafer having discharge structure to substrate Tetsuro Yanai, Takehiro Hirano 2005-01-25
5939337 Toner fixation film and toner fixation apparatus using it Hideyuki Hatakeyama, Kazuo Kishino, Masaaki Takahashi, Hideo Kawamoto 1999-08-17
5863660 Fixing member and fixing apparatus including same Kazuo Kishino, Masaaki Takahashi, Hideo Kawamoto, Hideyuki Hatakeyama 1999-01-26
5763068 Fluororesin-coated member, production method therefor and heat fixing device using the coated member Kazuo Kishino, Masaaki Takahashi, Hideo Kawamoto, Hideyuki Hatakeyama 1998-06-09
5765086 Heat fixing belt with conductive aluminum layer toner release layer and elastic layer disposed therebetween Kazuo Kishino, Masaaki Takahashi, Hideo Kawamoto, Hideyuki Hatakeyama 1998-06-09
5753348 Fluororesin tube-covered fixing roller, and image formation apparatus Hideyuki Hatakeyama, Kazuo Kishino, Masaaki Takahashi, Hideo Kawamoto 1998-05-19
5628314 Multi-laser beam-scanning through living body penetration diagnosis and treatment apparatus 1997-05-13
5608508 Rotatable member for fixing in which inorganic filler is contained in silicone rubber, and fixing device having the same Takeshi Menjo, Kazuo Kishino, Masaaki Takahashi, Rie Saito, Jiro Ishizuka +2 more 1997-03-04
5392156 Optical device Nagato Osano, Naoki Kobayashi 1995-02-21
5320936 Photo responsive material employing a thiophene derivative having long conjugated chain at 3-position Tomokazu Iyoda, Takeo Shimizu 1994-06-14
5247098 Thiophene derivative having long conjugated chain at 3-position, and photo-responsive material imploying the same Tomokazu Iyoda, Takeo Shimizu 1993-09-21