Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11333245 | Oil control ring and spacer expander | Hiroshi Shimizu, Satoshi Koizumi, Shigeru Tokunaga, Yuichiro Takezawa | 2022-05-17 |
| 10040407 | Interior material for vehicle | Hiroki Nomura | 2018-08-07 |