Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738561 | Stock shape for downhole tool component, downhole tool component, and downhole tool | Fuminori Kobayashi, Takeo Takahashi | 2020-08-11 |
| 10626694 | Downhole tool member for hydrocarbon resource recovery | Hikaru Saijo, Katsumi Yoshida, Hiroyuki Sato | 2020-04-21 |
| 10619084 | Plug for well drilling provided with diametrically expandable annular rubber member formed from degradable rubber material | Takeo Takahashi | 2020-04-14 |
| 10414851 | Rubber member for downhole tools, downhole tool, and method for recovering hydrocarbon resource | Takeo Takahashi | 2019-09-17 |
| 10280699 | Degradable rubber member for downhole tools, degradable seal member, degradable protecting member, downhole tool, and method for well drilling | Takeo Takahashi, Takuma Kobayashi | 2019-05-07 |
| 10208559 | Diameter-expandable annular degradable seal member for downhole tool, plug for well drilling, and method for well drilling | Takeo Takahashi | 2019-02-19 |
| 10072476 | Poly-L-lactic acid solid-state extrusion molded article, method for producing the same, and use applications of the same | Takeo Takahashi, Hiroyuki Sato | 2018-09-11 |
| 10030464 | Member for hydrocarbon resource collection downhole tool | Hikaru Saijo, Katsumi Yoshida, Hiroyuki Sato | 2018-07-24 |
| 10030465 | Solidification- and extrusion-molded article of polyglycolic acid and method for manufacturing same | Takeo Takahashi, 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, Hikaru Saijo, Takeo Takahashi | 2018-03-27 |
| 9914871 | Ball sealer for hydrocarbon resource recovery, method for manufacturing same, and method for treating borehole using same | Takeo Takahashi | 2018-03-13 |
| 9879500 | Well treatment method by disintegrating elastic material by contacting seal member for downhole tools comprising elastic material with well treatment fluid | Takeo Takahashi, Takuma Kobayashi | 2018-01-30 |
| 9714551 | Plug for well drilling process provided with mandrel formed from degradable material | Takeo Takahashi | 2017-07-25 |
| 9644453 | Ball sealer for hydrocarbon resource collection as well as production method therefor and downhole treatment method using same | Hiroyuki Sato | 2017-05-09 |
| 9574418 | Downhole tool member for hydrocarbon resource recovery | Hikaru Saijo, Katsumi Yoshida, Hiroyuki Sato | 2017-02-21 |
| 9267351 | Member for hydrocarbon resource collection downhole tool | Hikaru Saijo, Katsumi Yoshida, Hiroyuki Sato | 2016-02-23 |
| 8632888 | Coating solution, and gas barrier film, gas barrier laminate and gas barrier multilayer film, using the coating solution, and their manufacturing methods | Yuko Sekimori, Masahiro Yamazaki | 2014-01-21 |
| 8158213 | Aqueous polymerizable monomer composition, gas barrier film and production process of the film | Yusaku Inaba, Mototaka Kawashima | 2012-04-17 |
| 7807272 | Coating solution, and gas barrier film, gas barrier laminate and gas barrier multilayer film, using the coating solution, and their manufacturing methods | Yuko Sekimori, Masahiro Yamazaki | 2010-10-05 |