Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6230747 | Pipe connecting method and piping structure | Haruhiko Nishino | 2001-05-15 |
| 5685190 | Expanding mandrel, expanding method and expanding apparatus using the expanding mandrel and heat exchanger with heat exchanging tubes expanded by the expanding method | Yoshitaka Yamamoto, Shigemi Miwa, Isao Ogami, Takuro Katagami | 1997-11-11 |