Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4723529 | Oil separator for a blowby gas ventilation system of an internal combustion engine | Tatsuhisa Yokoi, Yasuji Nishi | 1988-02-09 |
| 4672939 | Intake manifold for internal combustion engine having exhaust gas recirculation system | Tatsuhisa Yokoi, Kyo Hattori, Kazuo Abe, Hideyuki Osawa | 1987-06-16 |
| 4648373 | Intake manifold for internal combustion engine having exhaust gas recirculation system | Yoshikazu Noguchi, Tatsuhisa Yokoi, Hideyuki Osawa | 1987-03-10 |