Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6725878 | Gas leak detection system | Motoyuki Nawa, Shigeru Iwanaga | 2004-04-27 |
| 6691582 | Gas type identification system | Motoyuki Nawa, Yukio Nagaoka | 2004-02-17 |
| 6625549 | Equipment specifying system | Motoyuki Nawa | 2003-09-23 |
| 5237200 | Semiconductor bipolar transistor with concentric regions | Tohru Nakamura | 1993-08-17 |
| 5227329 | Method of manufacturing semiconductor device | Takashi Kobayashi, Shimpei Iijima, Atsushi Hiraiwa, Nobuyoshi Kobayashi, Takashi Hashimoto | 1993-07-13 |
| 5214497 | Polycrystalline silicon resistor for use in a semiconductor integrated circuit having a memory device | Masao Kondo, Takeo Shiba, Tohru Nakamura | 1993-05-25 |
| 5109263 | Semiconductor device with optimal distance between emitter and trench isolation | Tohru Nakamura, Kazuo Nakazato, Takeo Shiba, Katsuyoshi Washio, Kiyoji Ikeda +2 more | 1992-04-28 |
| 4584421 | Method for thermal decomposition of plastic scraps and apparatus for disposal of plastic scraps | Kiyoshi Saito | 1986-04-22 |
| 4373975 | Method of diffusing an impurity | Masahiko Ogirima, Hirotsugu Kozuka, Akira Shintani | 1983-02-15 |