Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880054 | Heat exchanger tube for evaporation or condensation | Takayuki Yoshida, Kiyoshi Sakuma | 1989-11-14 |
| D302853 | Finned heat exchanger for electronic equipment | Nobuyoshi Takahashi, Yoshihiko Yamamoto, Yu Seshimo | 1989-08-15 |
| D300240 | Heat radiation plate | Kiyoshi Sakuma, Yoshiaki Tanimura, Hiroyuki Umemura, Makoto Yamada, Ikuo Tsukamoto +1 more | 1989-03-14 |
| 4794983 | Heat exchanger tube for evaporation or condensation | Takayuki Yoshida, Kiyoshi Sakuma | 1989-01-03 |