Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5448942 | Engine piston | Takayuki Arai, Yoshiki Sekiya | 1995-09-12 |
| 5193436 | Engine piston | Kyugo Hamai, Takayuki Arai, Hisafumi Usuki | 1993-03-16 |
| 5107807 | Piston for internal combustion engine | Takayuki Arai, Kyugo Hamai | 1992-04-28 |
| 5035210 | Piston assembly of internal combustion engine | Takayuki Arai, Kyugo Hamai | 1991-07-30 |
| 4934347 | Variable compression piston arrangement for internal combustion engine | Seiji Suga, Tatsuyuki Matsuya, Seinosuke Hara, Hiromichi Ofuji, Takayuki Arai | 1990-06-19 |
| 4809650 | Variable compression control arrangement for internal combustion engine | Takayuki Arai, Hiromichi Ofuji, Takehisa Kondo, Seinosuke Hara, Seiji Suga +2 more | 1989-03-07 |
| 4261719 | Method of and apparatus for controlling rate of material air supply to air separation plant | Akiyoshi Gotoh, Taichi Katsuki, Takumi Mizokawa, Noritoshi Sakai | 1981-04-14 |
| 4251248 | Method and apparatus for automatic change of operations in air separation plant | Takeshi Iyoki, Taichi Katsuki, Takumi Mizokawa | 1981-02-17 |