Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6027577 | Manufacturing method of valve spring superior in durability | Taisuke Nishimura, Takashi Otowa | 2000-02-22 |
| 5897717 | High strength spring steel and process for producing same | Masayuki Hashimura, Masato Yanase, Taisuke Nishimura, Takashi Otowa, Hiroshi Yarita +2 more | 1999-04-27 |