Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11053976 | Double-row cylindrical roller bearing | Tsuguhisa Hagiwara, Yoshiji Nakazawa, Kazuhiko Kurashina | 2021-07-06 |
| 4649097 | Corona discharge apparatus and method for corona discharge treatment | Satoshi Tsukada | 1987-03-10 |