Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873127 | Method of making heat transfer tube | Kagetoshi Onodera, Toshiyuki Kato, Junji Sotani, Masauki Momo, Shuichi Furuya | 1989-10-10 |
| 4803343 | Electric fluid heating apparatus utilizing a vaporizable working fluid | Junji Sotani, Shiro Endo, Nobuyoshi Mashino, Susumu Seo | 1989-02-07 |