RT

Ryoichi Takahata

KC Koyo Seiko Co.: 11 patents #29 of 749Top 4%
HI Hitachi: 7 patents #5,859 of 28,497Top 25%
HS Hitachi Automotive Systems: 3 patents #507 of 1,636Top 35%
HC Hitachi Industrial Equipment Systems Co.: 2 patents #215 of 550Top 40%
SI Shikoku Research Institute Incorporated: 2 patents #7 of 46Top 20%
HC Hitachi Car Engineering Co.: 1 patents #275 of 465Top 60%
Overall (All Time): #184,952 of 4,157,543Top 5%
23
Patents All Time

Issued Patents All Time

Showing 1–23 of 23 patents

Patent #TitleCo-InventorsDate
9325264 Electric motor drive device Yoshitaka Iwaji, Takahiro Suzuki 2016-04-26
8884575 Drive system for synchronous electrical motor Yoshitaka Iwaji, Shigehisa Aoyagi, Kazuaki Tobari 2014-11-11
8878480 Synchronous motor drive system and synchronous motor Yoshitaka Iwaji, Shigehisa Aoyagi, Kazuaki Tobari, Masaki Hano 2014-11-04
8766575 Synchronous electric motor drive system Yoshitaka Iwaji, Shigehisa Aoyagi, Kazuaki Tobari 2014-07-01
7915776 Permanent magnet type electric rotary machine and compressor using the same Satoshi Kikuchi, Shinichi Wakui, Keiji Noma, Masaharu Senoo 2011-03-29
7768172 Permanent magnet type electric rotary machine and compressor using the same Satoshi Kikuchi, Shinichi Wakui, Keiji Noma, Masaharu Senoo 2010-08-03
7057327 Vehicular alternator Hiroshi Kanazawa, Kenji Miyata, Kaoru Kawabata, Kohji Maki, Kazuo Tahara +1 more 2006-06-06
6838798 Permanent magnet type rotating electric machine Shinichi Wakui, Haruo Koharagi, Satoshi Kikuchi, Miyoshi Takahashi, Masaharu Senoh +4 more 2005-01-04
6759776 Permanent magnet type electric rotating machine Shinichi Wakui, Haruo Koharagi, Satoshi Kikuchi, Miyoshi Takahashi 2004-07-06
6759777 Permanent magnet type electric rotating machine Shinichi Wakui, Haruo Koharagi, Satoshi Kikuchi, Miyoshi Takahashi 2004-07-06
6552461 Permanent magnet type rotating electric machine Shinichi Wakui, Haruo Koharagi, Satoshi Kikuchi, Miyoshi Takahashi, Masaharu Senoh +4 more 2003-04-22
6541880 Linear motor Takashi Okada, Kim Houng Joong, Kazuo Tahara, Kohji Maki, Kouki Yamamoto +2 more 2003-04-01
5801469 Superconducting bearing device Motoaki Shibayama, Hiroshi Takaichi 1998-09-01
5763971 Superconducting bearing device Taisaku Hashimoto 1998-06-09
5739606 Superconducting bearing device Motoaki Shibayama, Hiroshi Takaichi 1998-04-14
5736802 Magnetic bearing device Hirochika Ueyama 1998-04-07
5633548 Method for setting up a superconducting bearing device Shoji Eguchi 1997-05-27
5446018 Superconducting bearing device Motoaki Shibayama 1995-08-29
5438038 Superconducting bearing device stabilized by trapped flux Shoji Eguchi 1995-08-01
5330967 Superconducting bearing device stabilized by trapped flux Shoji Eguchi 1994-07-19
5314868 Bearing device Hirochika Ueyama 1994-05-24
5254528 Brake device including magnet and superconductor 1993-10-19
5111140 Apparatus and method for measuring repulsive displacement and repulsive force characteristics of a superconductor with respect to a magnet 1992-05-05