Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836276 | Heat exchanger for engine oil | Yasutoshi Yamanaka, Kazuya Nomura | 1989-06-06 |
| 4742866 | Heat exchanger | Yasutoshi Yamanaka, Kazuya Nomura | 1988-05-10 |
| 4638856 | Oil filter and cooler for internal combustion engine | Yasutoshi Yamanaka, Kazunobu Ageishi | 1987-01-27 |