Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5020969 | Turbo vacuum pump | Masahiro Mase, Seiji Sakagami, Takeshi Okawada, Shinjiroo Ueda, Takashi Nagaoka | 1991-06-04 |
| 4904155 | Vacuum pump | Takashi Nagaoka, Ichiro Gyobu, Kimio Muramatsu, Keiji Ueyama, Masahiro Mase +1 more | 1990-02-27 |
| 4593835 | Cryogenic liquefied pump system | Seiichi Kikkawa, Hisanao Ogata, Yoshinori Hakuraku, Masahiro Mase, Nobuo Tsumaki +1 more | 1986-06-10 |