Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6302937 | Sintered alloy having superior wear resistance | Koichiro Hayashi, Yoshimasa Aoki | 2001-10-16 |
| 6251157 | Sintered alloy having superb wear resistance and process for producing the same | Yoshimasa Aoki, Koichiro Hayashi, Toru Tsuboi | 2001-06-26 |
| 5834664 | Wear-resistant sintered alloy, and its production method | Yoshimasa Aoki, Koichiro Hayashi | 1998-11-10 |
| 5824922 | Wear-resistant sintered alloy, and its production method | Yoshimasa Aoki, Koichiro Hayashi | 1998-10-20 |