Issued Patents All Time
Showing 226–250 of 256 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5428228 | Method of operating thyristor with insulated gates | Tsuneo Ogura, Kiminori Watanabe, Akio Nakagawa, Norio Yasuhara, Tomoko Matsudai +2 more | 1995-06-27 |
| 5424507 | Controlling working gas flow rate and arc current level in plasma arc cutting machine | — | 1995-06-13 |
| 5393952 | Plasma torch for cutting use with nozzle protection cap having annular secondary GPS passage and insulator disposed in the secondary gas passage | Hitoshi Satoh, Toshiya Shintani | 1995-02-28 |
| 5377452 | Grinder for grinding stamper used for disc molding | — | 1995-01-03 |
| 5373436 | Power converting device with inverter circuitry for driving multiple-phase variable-speed motor | Yoshiyuki Sano | 1994-12-13 |
| 5315134 | Thyristor with insulated gate | Tsuneo Ogura, Kiminori Watanabe, Akio Nakagawa, Norio Yasuhara, Tomoko Matsudai | 1994-05-24 |
| 5286984 | Conductivity modulated MOSFET | Akio Nakagawa, Hiromichi Ohashi, Kiminori Watanabe, Thuneo Thukakoshi | 1994-02-15 |
| 5237186 | Conductivity-modulation metal oxide field effect transistor with single gate structure | Akio Nakagawa, Kiminori Watanabe | 1993-08-17 |
| 5225658 | Stopping a plasma arc cutter upon completion of cutting | Iwao Kurokawa | 1993-07-06 |
| 5202544 | Method of machining plate materials with a plasma cutter and plasma torch | Makoto Inoue, Kunio Horiai, Toshiya Shintani | 1993-04-13 |
| 5168333 | Conductivity-modulation metal oxide semiconductor field effect transistor | Akio Nakagawa, Kiminori Watanabe | 1992-12-01 |
| 5140130 | Construction of nozzle for plasma cutting torch | Shun-ichi Sakuragi | 1992-08-18 |
| 5124773 | Conductivity-modulation metal oxide semiconductor field effect transistor | Akio Nakagawa, Kiminori Watanabe | 1992-06-23 |
| 5105243 | Conductivity-modulation metal oxide field effect transistor with single gate structure | Akio Nakagawa, Kiminori Watanabe | 1992-04-14 |
| 5093701 | Conductivity modulated MOSFET | Akio Nakagawa, Hiromichi Ohashi, Kiminori Watanabe, Thuneo Thukakoshi | 1992-03-03 |
| 5086323 | Conductivity modulated MOSFET | Akio Nakagawa, Hiromichi Ohashi, Kiminori Watanabe, Thuneo Thukakoshi | 1992-02-04 |
| 5086332 | Planar semiconductor device having high breakdown voltage | Akio Nakagawa, Kiminori Watanabe, Yutaka Koshino, Yoshiro Baba | 1992-02-04 |
| 5068700 | Lateral conductivity modulated MOSFET | Kiminori Watanabe, Akio Nakagawa | 1991-11-26 |
| 5036176 | Plasma arc cutter and method of controlling the same | Iwao Kuorkawa | 1991-07-30 |
| 4994904 | MOSFET having drain voltage detection function | Akio Nakagawa | 1991-02-19 |
| 4980743 | Conductivity-modulation metal oxide semiconductor field effect transistor | Akio Nakagawa, Kiminori Watanabe | 1990-12-25 |
| 4928155 | Lateral conductivity modulated MOSFET | Akio Nakagawa, Hiromichi Ohashi, Kiminori Watanabe, Thuneo Thukakoshi | 1990-05-22 |
| 4894088 | Pellet for fabricating metal matrix composite and method of preparing the pellet | Hiroyuki Murata, Shunichi Mizukami, Kenichiro Ohuchi, Hiroyuki Morimoto, Jun Hirose | 1990-01-16 |
| 4881120 | Conductive modulated MOSFET | Akio Nakagawa, Hiromichi Ohashi, Kiminori Watanabe, Thuneo Thukakoshi | 1989-11-14 |
| 4878957 | Dielectrically isolated semiconductor substrate | Kiminori Watanabe, Akio Nakagawa, Kazuyoshi Furukama, Kiyoshi Fukuda, Katsujiro Tanzawa | 1989-11-07 |