Issued Patents All Time
Showing 25 most recent of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7746614 | Drive circuit for switching device | Katsumi Ishikawa, Masataka Sasaki | 2010-06-29 |
| 7696650 | Driving circuit for switching elements | Katsumi Ishikawa, Hideki Miyazaki, Katsunori Suzuki | 2010-04-13 |
| 7675727 | Protection circuit for power management semiconductor devices and power converter having the protection circuit | Masataka Sasaki, Katsumi Ishikawa, Ryuichi Saito, Katsuaki Takahashi | 2010-03-09 |
| 7564294 | Inverter apparatus | Katsumi Ishikawa, Hideki Miyazaki | 2009-07-21 |
| 7483250 | Drive circuit for switching device | Katsumi Ishikawa, Masataka Sasaki | 2009-01-27 |
| 7336118 | Inverter apparatus | Katsumi Ishikawa, Hideki Miyazaki | 2008-02-26 |
| 7295412 | Protection circuit for power management semiconductor devices and power converter having the protection circuit | Masataka Sasaki, Katsumi Ishikawa, Ryuichi Saito, Katsuaki Takahashi | 2007-11-13 |
| 7126802 | Drive circuit for switching device | Katsumi Ishikawa, Masataka Sasaki | 2006-10-24 |
| 6881313 | Crater inhibiting method and crater inhibiting agent for cationic electrodeposition coating composition | Shuhei Yamoto, Kunio Murase | 2005-04-19 |
| 6823885 | Liquid drains having liquid level adjusting mechanisms | Akihisa Hotta, Kiyoshi Yoshizumi | 2004-11-30 |
| 6776823 | Gas/liquid separating devices | Akihisa Hotta, Kiyoshi Yoshizumi | 2004-08-17 |
| 6580108 | Insulated gate bipolar transistor decreasing the gate resistance | Tomoyuki Utsumi, Shoichi Ozeki | 2003-06-17 |
| 6520206 | Bi-directional pilot type electromagnetic valves | Akihisa Hotta, Takeshi Yamamoto | 2003-02-18 |
| 5906294 | Powder supplying device utilizing an ultrasonic motor | Masaki Ikeya | 1999-05-25 |
| 5426844 | Method of making a electromagnetic rotation detector | Takeshi Fukaya, Tadao Horiuchi | 1995-06-27 |
| 5363033 | Electromagnetic rotation detector having a magnet of a symmetrically cut out cross-section for electrical connections | Takeshi Fukaya, Tadao Horiuchi | 1994-11-08 |
| 5351182 | Level shift circuit and inverter apparatus using the same | Hideki Miyazaki, Tsunehiro Endo, Kouzou Watanabe, Yuhachi Takakura | 1994-09-27 |
| 5289327 | Hard disk inspection apparatus | — | 1994-02-22 |
| 5237861 | Magnetic disk inspection apparatus | Shinichi Nomura | 1993-08-24 |
| 5184272 | High-side switch with overcurrent protecting circuit | Hitoshi Matsuzaki, Masayuki Wada, Shoichi Ozeki | 1993-02-02 |
| 5128645 | Ignition coil for an internal combustion engine | — | 1992-07-07 |
| 4960089 | Combustion system | Michikata Kono, Yoshiyuki Wada, Tetuya Kamihara, Masahito Tatematsu | 1990-10-02 |
| 4822532 | Carburetor | Fumio Sugi | 1989-04-18 |
| 4758525 | Method of making light-receiving diode | Yasuhiro Kida, Kunihiro Matsukuma, Keiichi Morita | 1988-07-19 |
| 4738112 | Method and device for controlling brake booster supplementary vacuum pump ensuring good booster vacuum and low pump wear | Yoshihisa Nomura | 1988-04-19 |