Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869623 | Method of broaching outer periphery of lobe-type rotor of roots-type fluid machine, and broaching cutter used in the method | Hajime Takeshita, Naofumi Masuda, Takuo Sibata, Hiroyuki Mochizuki, Nobuo Kobayashi +2 more | 1989-09-26 |
| 4806387 | Method for coating metal part with synthetic resin | Shigenori Tamaki, Hiroyuki Machizuki, Nobuo Kobayashi, Naofumi Masuda | 1989-02-21 |
| 4806388 | Method and apparatus for coating metal part with synthetic resin | Hiroyuki Mochizuki, Nobuo Kobayashi, Shigenori Tamaki, Naofumi Masuda, Yoshio Taguchi | 1989-02-21 |