Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4764098 | Roots type pump with pin connection for plastic coated rotor | Takahiro Iwase, Hiroyuki Mochizuki, Shigenori Tamaki, Nobuo Kobayashi, Naofumi Masuda | 1988-08-16 |
| 4747763 | Rotor assembly of roots pump | Takuo Sibata, Hisao Shirai, Yoshio Kuroiwa, Kichiro Kato, Naofumi Masuda | 1988-05-31 |