Issued Patents 2021
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11155909 | High-strength free-cutting copper alloy and method for producing high-strength free-cutting copper alloy | Keiichiro Oishi, Hiroki Goto | 2021-10-26 |
| 11136648 | Free-cutting copper alloy, and method for producing free-cutting copper alloy | Keiichiro Oishi, Shinji Tanaka, Yoshiyuki Goto | 2021-10-05 |
| 11131009 | High-strength free-cutting copper alloy and method for producing high-strength free-cutting copper alloy | Keiichiro Oishi, Hiroki Goto | 2021-09-28 |