Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7892481 | Manufacturing method for wear resistant sintered member, sintered valve seat, and manufacturing method therefor | Tatsuaki Yoshihiro, Hideaki Kawata, Hiroki Fujitsuka, Kunio Maki | 2011-02-22 |
| 6660056 | Valve seat for internal combustion engines | Koichiro Hayashi, Hideaki Kawata | 2003-12-09 |
| 6251157 | Sintered alloy having superb wear resistance and process for producing the same | Yoshimasa Aoki, Koichiro Hayashi, Koichi Aonuma | 2001-06-26 |