Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6471794 | Fin material for brazing | Takeyoshi Doko, Akira Kawahara, Sunao Fukuda, Masaki Shimizu, Kenji Negura | 2002-10-29 |
| 6465113 | Aluminum alloy brazing sheet for a heat exchanger | Noriyuki Yamada, Takeyoshi Doko, Yoshiaki Ogiwara, Satoshi Tanaka, Sunao Fukuda +2 more | 2002-10-15 |