YH

Yoshiaki Hamasaki

KC Koyo Seiko Co.: 12 patents #26 of 749Top 4%
MM Mitsubishi Motors: 3 patents #352 of 1,823Top 20%
JT Jtekt: 1 patents #1,102 of 1,969Top 60%
Overall (All Time): #385,538 of 4,157,543Top 10%
13
Patents All Time

Issued Patents All Time

Showing 1–13 of 13 patents

Patent #TitleCo-InventorsDate
8591203 Pump apparatus Yoshihito Yoshihara, Takashi Taniwa, Katsutake Asano 2013-11-26
6287090 Electric pump apparatus Takayasu Yamazaki, Toshio Iida 2001-09-11
6233930 Power steering device Hirofumi Matsuoka, Yoshihiro Goto 2001-05-22
6048187 Gear pump Toshio Iida 2000-04-11
6004119 Motor-driven hydraulic gear pump having a noise damper Yoshifumi Obata, Toshio Iida 1999-12-21
5356535 Oil tank Hiroshi Ueno, Hirokazu Arai, Akihiko Shiina, Masuyoshi Uchida, Seiji Fujioka 1994-10-18
5280868 Reservoir supporting structure Hiroshi Ueno, Hirokazu Arai, Akihiko Shiina 1994-01-25
5220939 Flow control apparatus Akihiko Shiina, Kouji Nakayama 1993-06-22
5074825 Hydraulic transmission coupling apparatus Takao Tamagawa, Shuzo Hirakushi, Yoshihiro Nakagawa 1991-12-24
4995491 Power transmission apparatus Takeo Hiramatsu, Kenjiro Fujita, Yoshimasa Nagayoshi, Satoshi Kawai 1991-02-26
4980521 Power transmission apparatus Takeo Hiramatsu, Kenjiro Fujita, Yoshimasa Nagayoshi, Satoshi Kawai 1990-12-25
4919248 Drive coupling unit Takeo Hiramatsu, Kenjiro Fujita, Yoshimasa Nagayoshi, Shuzo Hirakushi 1990-04-24
4850447 Power transmission apparatus for a vehicle Shuzo Hirakushi, Goki Shimamura 1989-07-25