KM

Keizo Matsui

Sumitomo Electric Industries: 7 patents #3,987 of 21,551Top 20%
Fujitsu Limited: 4 patents #7,093 of 24,456Top 30%
PA Panasonic: 2 patents #9,678 of 21,108Top 50%
Overall (All Time): #424,374 of 4,157,543Top 15%
12
Patents All Time

Issued Patents All Time

Showing 1–12 of 12 patents

Patent #TitleCo-InventorsDate
7669430 Heat pump apparatus Hiroshi Hasegawa, Fumitoshi Nishiwaki 2010-03-02
7574873 Inverter device and air conditioner using inverter device Naomi Goto, Makoto Yoshida 2009-08-18
6822417 Synchronous reluctance motor control device Mitsuo Kawaji, Hideo Matsushiro 2004-11-23
6512341 Apparatus and method for driving a brushless motor Hideo Matsushiro, Kazushige Narazaki, Toru Tazawa 2003-01-28
6278910 Compressor driving apparatus Kenichiro Miura, Yoshihiro Tokorotani 2001-08-21
5778885 Force sensation exhibiting device data input device and data input equipment Yoshiaki Doyama, Masataka Ozeki, Yoshiteru Ito 1998-07-14
5646499 Inverter control apparatus Yoshiaki Doyama, Yoshiteru Ito, Kaneharu Yoshioka, Hideo Ogata, Izumi Yoshida +1 more 1997-07-08
5555894 Force sensation exhibiting device, data input device and data input equipment Yoshiaki Doyama, Masataka Ozeki, Yoshiteru Ito 1996-09-17
4976377 Liquid and powder measuring apparatus Noboru Higuchi, Chuzo Kobayashi, Yasunori Ichikawa, Shigeru Yamaguchi 1990-12-11
4880142 Powder weighing mixer and method thereof Noboru Higuchi, Chuzo Kobayashi, Hiroshi Ohnishi 1989-11-14
4872763 Method of and apparatus for measuring liquid Noboru Higuchi, Chuzo Kobayashi, Shigeru Yamaguchi 1989-10-10
4830508 Controlling method and a measuring mixer for liquids and powders Noboru Higuchi, Chuzo Kobayashi, Hiroshi Ohnishi, Shigeru Yamaguchi 1989-05-16