TK

Toru Kumagai

SI Seiko Instruments: 3 patents #474 of 1,437Top 35%
SS Sankyo Seiki Seisakusho: 2 patents #74 of 287Top 30%
NT Nec Tokin: 1 patents #143 of 299Top 50%
SC Sankyo Seiki Mfg. Co.: 1 patents #107 of 244Top 45%
TK Titan Kogyo Kabushiki Kaisha: 1 patents #26 of 49Top 55%
TO Tokin: 1 patents #101 of 278Top 40%
SO Sony: 1 patents #17,262 of 25,231Top 70%
Honda Motor Co.: 1 patents #12,035 of 21,052Top 60%
MC Mitsubishi Diamond Industrial Co.: 1 patents #28 of 58Top 50%
Overall (All Time): #334,229 of 4,157,543Top 9%
14
Patents All Time

Issued Patents All Time

Showing 1–14 of 14 patents

Patent #TitleCo-InventorsDate
12319818 Charge-adjustment powder having excellent ability to maintain applied charge, and method of manufacturing the same Takayasu Tanaka, Toshimasa Seki, Takafumi Tanaka, Tomoko Yoshimi 2025-06-03
10077081 Vehicle roof structure and method for manufacturing vehicle roof structure Hiroki KUWAHARA, Hiroki Fujiuchi, Takahiro Morita, Akira Goto, Keiji Otsuka +1 more 2018-09-18
8276796 Device and method for cutting off substrate of fragile material Yuki Nishisaka, Kenji Otoda, Shuichi Inoue 2012-10-02
7191806 Oil injecting apparatus Ryoji Yoneyama, Shinji Kinoshita, Hiromitsu Gotoh, Atsushi Ohta 2007-03-20
6628798 Vibration actuator having three vibration modes Makoto Teshima, Koji Uchida, Yutaka Suzuki 2003-09-30
6575633 Hydraulic bearing motor Hiromitsu Goto, Shinji Kinoshita, Yukihiro Nakayama, Chihiro Tazawa, Mitsuharu Iwamoto +1 more 2003-06-10
6552456 Hydraulic dynamic pressure bearing motor Hiromitsu Goto, Shinji Kinoshita, Yukihiro Nakayama, Chihiro Tazawa, Mitsuharu Iwamoto +1 more 2003-04-22
6377145 Vibration actuator having magnetic circuit elastically supported by a spiral damper with increased compliance 2002-04-23
5938598 Magnetic field source movable phantom head Tsunehiro Takeda, Hiroshi Endo 1999-08-17
5706811 Method and apparatus for setting reference point for organic measurement Tsunehiro Takeda, Hiroshi Endo 1998-01-13
5633769 Magnetic disc drive device Shinji Kinoshita, Mitsuru Ide 1997-05-27
5572078 Spindle motor Masayoshi Saichi 1996-11-05
5572384 Magnetic disk drive device having lead wire holding structure Mitsuru Ide 1996-11-05
4706108 Automatic setup system for controlling color gain, hue and white balance of TV monitor Yoshihiro Kosugi 1987-11-10