Issued Patents 2021
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10995394 | Steel bar for downhole member, and downhole member | Daisuke Matsuo, Takuji Nakahata, Hisashi Amaya, Tsutomu Okuyama | 2021-05-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10995394 | Steel bar for downhole member, and downhole member | Daisuke Matsuo, Takuji Nakahata, Hisashi Amaya, Tsutomu Okuyama | 2021-05-04 |