Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6647777 | Flow rate sensor, flow meter, and discharge rate control apparatus for liquid discharge machines | Atsushi Koike, Kiyoshi Yamagishi, Toshiaki Kawanishi, Kenji Tomonari, Shinichi Inoue +2 more | 2003-11-18 |
| 5136851 | Helium gas compressing apparatus | — | 1992-08-11 |
| 4697994 | Multistage discharge type rotary vacuum pump | Tadao Ishizawa, Masami Kakinuma | 1987-10-06 |
| 4622823 | Gas refrigerator | Tadao Ishizawa, Masami Kakinuma | 1986-11-18 |