Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5326317 | Ventilator | Tetsuo Ishizu | 1994-07-05 |
| 4819302 | Swingingly movable clearer mechanism suspended from a draft roller | Tatemi Fukuda, Yoshio Kawasaki, Kenji Negishi, Isao Ono, Isao Arita | 1989-04-11 |
| 4785507 | Clearer device for bottom draft roller | Tsutomu Miyazaki, Yoshio Kawasaki, Kenji Negishi, Isao Ono, Isao Arita | 1988-11-22 |
| 4603460 | Method for manufacturing a heat exchanger | Nobuyuki Yano, Takashi Inami, Mitsuru Ieki | 1986-08-05 |
| 4574872 | Heat exchanger apparatus | Nobuyuki Yano, Takuro Kotera, Toshio Utagawa, Akira Aoki, Kazufumi Watanabe | 1986-03-11 |