Issued Patents All Time
Showing 1–10 of 10 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 |
| 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 |
| 10030464 | Member for hydrocarbon resource collection downhole tool | Masayuki Okura, Katsumi Yoshida, Hiroyuki Sato | 2018-07-24 |
| 9926764 | Molded product having effective thickness of 1 mm or more and containing aliphatic polyester resin, and downhole tool member for hydrocarbon resource recovery | Takuma Kobayashi, Masayuki Okura, Takeo Takahashi | 2018-03-27 |
| 9902897 | Degradable fiber for use in well treatment fluid, method for manufacturing same, and well treatment method | Takeo Takahashi, Mizuki SAITO | 2018-02-27 |
| 9574418 | Downhole tool member for hydrocarbon resource recovery | Masayuki Okura, Katsumi Yoshida, Hiroyuki Sato | 2017-02-21 |
| 9267351 | Member for hydrocarbon resource collection downhole tool | Masayuki Okura, Katsumi Yoshida, Hiroyuki Sato | 2016-02-23 |