Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5829468 | Valve device using pipes and method of manufacturing it | Hachihei Watanabe, Masatoshi Enoki, Katsuaki Nakamura, Tatsuo Matsukuma, Tsuguya Okubo +4 more | 1998-11-03 |