Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4314605 | Condenser | Hiroyuki Sumitomo, Masafumi Doi, Kazuyuki Kobayashi, Kenzo Kawanishi | 1982-02-09 |
| 4182411 | Plate type condenser | Hiroyuki Sumitomo, Kazuyuki Kobayashi, Masafumi Doi, Kenzo Kawanishi, Keido Yoshida | 1980-01-08 |