Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10557185 | Free-cutting copper alloy, and method for producing free-cutting copper alloy | Keiichiro Oishi, Shinji Tanaka, Takayuki Oka | 2020-02-11 |
| 10538827 | Free-cutting copper alloy casting, and method for producing free-cutting copper alloy casting | Keiichiro Oishi, Shinji Tanaka, Yoshiyuki Goto | 2020-01-21 |
| 10538828 | Free-cutting copper alloy, and method for producing free-cutting copper alloy | Keiichiro Oishi, Shinji Tanaka, Takayuki Oka | 2020-01-21 |