Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10633518 | Surface treatment agent for metal material, method of producing the same, metal material having a surface treatment coating, and method of producing the same | Ichiro Oura | 2020-04-28 |
| 10531188 | Sound collecting device and sound collecting method | — | 2020-01-07 |