Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5836274 | Multi valve engine with variable valve operation | Hiroyuki Tsuzuku, Naoki Tsuchida | 1998-11-17 |
| 5809953 | Variable valve timing mechanism | Hiroyuki Tsuzuku, Naoki Tsuchida | 1998-09-22 |
| 5809963 | Lubricating arrangement for engine | — | 1998-09-22 |
| 5785017 | Variable valve timing mechanism | Hiroyuki Tsuzuku, Naoki Tsuchida | 1998-07-28 |
| 5758612 | Valve actuating structure for multi-valve engine | Hiroyuki Tsuzuku, Naoki Tsuchida | 1998-06-02 |
| 5647315 | Lubricating arrangement for engine | — | 1997-07-15 |
| 5606942 | Valve operating system for multi-valve engine | Hiroyuki Tsuzuku, Naoki Tsuchida | 1997-03-04 |
| RE35382 | Lubrication arrangement for engine | — | 1996-11-26 |
| 5503117 | Engine cooling system | — | 1996-04-02 |
| 5231961 | Camshaft and accessory drive arrangement for engine | Kazuo Shimada, Tatsuo Niiyama | 1993-08-03 |
| 5161495 | Lubrication arrangement for engine | — | 1992-11-10 |
| 5125374 | Valve actuating arrangement for engine | — | 1992-06-30 |
| 5121718 | Valve and spring arrangement for engine | — | 1992-06-16 |