Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11215091 | Hollow engine valve and manufacturing method therefor | Hirokazu Morii, Hidenobu Nishio | 2022-01-04 |
| 10526933 | Hollow engine valve and manufacturing method therefor | Hirokazu Morii, Hidenobu Nishio | 2020-01-07 |
| 9427795 | Method for producing a hollow engine valve | Hirokazu Morii, Katsumi Nakamura, Hyoji Yoshimura | 2016-08-30 |
| 9302317 | Method for manufacturing hollow engine valve | Hirokazu Morii, Hyoji Yoshimura | 2016-04-05 |
| 8827608 | Tool tight-contact-state detector for machine tool | Noritaka Fujimura | 2014-09-09 |
| 8561290 | Work line module and work facility | Tsugumaru Yamashita, Noritaka Fujimura | 2013-10-22 |