Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10829614 | Composition, composition for downhole tools, degradable rubber member for downhole, downhole tool, and method for well drilling | Takuma Kobayashi, Fuminori Kobayashi, Takeo Takahashi | 2020-11-10 |
| 10815362 | Composition, composition for downhole tools, degradable rubber member for downhole, downhole tool, and method for well drilling | Takuma Kobayashi, Fuminori Kobayashi, Takeo Takahashi | 2020-10-27 |
| 10626694 | Downhole tool member for hydrocarbon resource recovery | Masayuki Okura, Katsumi Yoshida, Hiroyuki Sato | 2020-04-21 |