Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4671751 | Screw rotor tooth profile | Shigeru Sasaki, Toshiaki Nagai | 1987-06-09 |
| 4561497 | Heat transfer surface and manufacturing method for same | Tadakatsu Nakajima, Wataru Nakayama, Takahiro Daikoku, Heikichi Kuwahara, Akira Yasukawa +3 more | 1985-12-31 |
| 4492546 | Rotor tooth form for a screw rotor machine | Hidetomo Mori, Mitsuru Fujiwara, Tetsuzo Matsunaga | 1985-01-08 |
| 4475878 | Screw rotor with tooth form produced by thermal deformation and gear backlash | Hidetomo Mori, Mitsuru Fujiwara, Tetsuzo Matsunaga | 1984-10-09 |
| 4406602 | Screw rotor with specific tooth profile | Mitsuru Fujiwara, Tetsuzo Matsunaga, Masaya Imai, Yasuo Takahashi | 1983-09-27 |
| 4401420 | Male and female screw rotor assembly with specific tooth flanks | Mitsuru Fujiwara, Masaya Imai, Tetsuzo Matsunaga, Yasuo Takahashi | 1983-08-30 |