Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7918096 | Refrigeration system | Katsumi Sakitani, Tetsuya Okamoto, Masakazu Okamoto | 2011-04-05 |
| 7896627 | Rotary type expander and fluid machinery | Masakazu Okamoto, Michio Moriwaki, Tetsuya Okamoto, Katsumi Sakitani | 2011-03-01 |