Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5996471 | Aluminum alloy for internal-combustion piston, and aluminum alloy piston | Tomohiro Aikawa, Akinari Ishikawa | 1999-12-07 |
| 5737838 | Method of making a piston unit for an internal combustion engine | Hiromi Niimi, Yasuhiro Kawabata, Tomohiro Sawada | 1998-04-14 |
| 5195478 | Piston for an internal combustion engine | Yasuhiro Kawabata, Hiroshi Kageyama, Toshiaki Konomi, Motoichi Murakami | 1993-03-23 |
| 5054375 | Piston for internal combustion engine | Yasuhiro Kawabata, Shirou Machida, Hiroshi Kageyama | 1991-10-08 |
| 5052281 | Internal combustion engine piston with top-land circumferential projection arrangement | Yasuhiro Kawabata, Shirou Machida, Hiroshi Kageyama | 1991-10-01 |
| 5014658 | Piston assembly having a fusible core to form a cooling channel and a method for the manufacture thereof | Hiroshi Kageyama | 1991-05-14 |
| 4870733 | Manufacturing method of a piston for an internal combustion engine | Yasuhiro Kawabata | 1989-10-03 |
| 4776075 | Method for manufacturing piston of internal combustion engine | Yasuhiro Kawabata, Naoki Minamoto, Takanori Kamiya | 1988-10-11 |