Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10487620 | Method of extracting underground resources and hydrolysis-blocking agent for use in the method | Tsutaki Katayama | 2019-11-26 |
| 10385171 | Powder comprising hydrolyzable resin particles | Toshiki Yamada, Tsutaki Katayama | 2019-08-20 |
| 10246625 | Dispersion solution for drilling and method of extraction using the dispersion solution | — | 2019-04-02 |