Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11142678 | Downhole tool | Fuminori Kobayashi | 2021-10-12 |
| 11059952 | Rubber composition for downhole tools and member for downhole tools | Fuminori Kobayashi, Takuma Kobayashi | 2021-07-13 |