Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4717315 | Small size axial-flow molecular pump using a magnetic bearing | Masaharu Miki, Chiaki Urano | 1988-01-05 |
| 4697994 | Multistage discharge type rotary vacuum pump | Hirofumi Kotaka, Masami Kakinuma | 1987-10-06 |
| 4622823 | Gas refrigerator | Hirofumi Kotaka, Masami Kakinuma | 1986-11-18 |
| 4387936 | Magnetic bearing for high-speed rotation | — | 1983-06-14 |