Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9937550 | Method of manufacturing die forged crankshaft | Tomihiko Fukuyasu, Junichi Okubo, Kunihiro Yoshida | 2018-04-10 |
| 9707618 | Apparatus for forming a blank for finish forging for a forged crankshaft for a three-cylinder engine and method for manufacturing a forged crankshaft for a three-cylinder engine using the same | Junichi Okubo, Kenji Tamura, Kunihiro Yoshida, Tomihiko Fukuyasu, Tadashi MATSUI | 2017-07-18 |
| 9630239 | Apparatus for forming a blank for finish forging for a forged crankshaft | Junichi Okubo, Kenji Tamura, Kunihiro Yoshida, Tomihiko Fukuyasu, Tadashi MATSUI | 2017-04-25 |