Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6691654 | Valve-lash adjuster equipped valve operating device for internal combustion engine | Seiji Tsuruta | 2004-02-17 |
| 6263843 | Valve timing control device of internal combustion engine | Tamotsu Todo, Seiji Tsuruta | 2001-07-24 |
| 5816216 | Decompression brake device of automotive internal combustion engine | Noboru Egashira, Seiji Tsuruta, Akira Torii | 1998-10-06 |
| 5743224 | Valve lifter surface and processing method thereof | Noriomi Hosaka, Akira Hidaka, Nobutaka Hayashi | 1998-04-28 |
| 5655499 | Decompression braking apparatus for diesel engine | Seiji Tsuruta, Akio Akasaka | 1997-08-12 |
| 5647319 | Decompression braking apparatus for diesel engine | Noboru Egashira, Seiji Tsuruta | 1997-07-15 |
| 5529685 | Dialysis system for returning blood in the system after the completion of dialysis | Yasubumi Irie, Kenichi Kurano, Toshikatsu Suzuki, Hiroaki Ishizuka, Shingo Ohwaki | 1996-06-25 |
| 5400749 | Valve lifter of valve mechanism for internal combustion engine | Shin Koizumi, Noriomi Hosaka | 1995-03-28 |