Issued Patents 2022
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11333245 | Oil control ring and spacer expander | Hiroshi Shimizu, Kenichi Sudou, Shigeru Tokunaga, Yuichiro Takezawa | 2022-05-17 |
| 11255032 | Polyester binder fiber | Akihiro Uehata, Hayato Hohman | 2022-02-22 |