Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10681468 | Speaker diaphragm and coil coupling arrangement, and method | Koji Okazaki | 2020-06-09 |
| 9266071 | Hydrogen separation alloy and method for producing same | Kazuhiro Yamamura | 2016-02-23 |
| 8164297 | Power converter and motor driving system | Daisuke Tan, Hirohisa Satomi | 2012-04-24 |
| 6537463 | Resin-bonded magnet, its product, and ferrite magnet powder and compound used therefor | Katsunori Iwasaki, Yasunobu Ogata, Mikio Shindo, Hiroshi Okajima | 2003-03-25 |
| 6421519 | Magnet roll having an anisotropic bonded magnet portion containing rare earth-iron-nitrogen magnet powder | Keitaro Yamashita | 2002-07-16 |
| 6413327 | Nitride type, rare earth magnet materials and bonded magnets formed therefrom | Hiroshi Okajima, Mikio Shindo | 2002-07-02 |
| 6310456 | Control system and method | Yasuo Morooka, Hiromi Inaba, Takashi Nakahara, Takashi Okada, Yoshitaka Iwaji | 2001-10-30 |
| 6028779 | Power inverter device | Kiyoshi Sakamoto, Takashi Ikimi, Kenichi Onda | 2000-02-22 |
| 5748416 | Magnetoresistive playback head | Chiharu Mitsumata, Hisayuki Miura, Tetsurou Kawai, Simon Liao | 1998-05-05 |
| 5545957 | Motor speed controller for suppressing shaft torsion vibration | Kenji Kubo, Rached Dhaouadi, Noboru Azusawa | 1996-08-13 |
| 5256944 | Motor speed control method and apparatus with drooping compensation independent of acceleration or deceleration current and time constant of motor | Itsuo Shimizu, Yuji Yamasawa, Toshihiko Chino | 1993-10-26 |
| 5245257 | Control system | — | 1993-09-14 |
| 4814678 | Speed control apparatus for motor | Tsutomu Omae, Toshihiko Matsuda, Takashi Sukegawa | 1989-03-21 |
| 4562390 | Insulation resistance measurement in static leonard apparatus | — | 1985-12-31 |