Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7458356 | Spring apparatus and valve train of internal combustion engine using the same | Kazuo Iwata, Koichiro Yamada, Noritoshi Takamura | 2008-12-02 |
| 7325571 | Pressure container and pressure accumulating/buffer apparatus | Hiroshi Mizukami, Koichiro Yamada, Kyohei Inoue | 2008-02-05 |
| 6525290 | Accumulator and manufacturing process thereof | Chiharu Umetsu, Kouji Nakamura, Hiroshi Mizukami, Naoki Ueno | 2003-02-25 |
| 6378848 | Gas spring apparatus | Takeshi Uchida | 2002-04-30 |
| 6286552 | Accumulator and manufacturing process thereof | Chiharu Umetsu, Kouji Nakamura, Hiroshi Mizukami, Naoki Ueno | 2001-09-11 |