Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5135566 | Iron base powder mixture and method | Ritsuo Okabe, Takao Omura, Yoshisato Kiyota, Shigeaki Takajo | 1992-08-04 |
| 4946499 | Method of preparing iron base powder mixture for pm | Ritsuo Okabe, Takao Omura, Yoshisato Kiyota, Shigeaki Takajo | 1990-08-07 |