Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4646811 | Process for forming a high alloy layer on a casting | Yasuhumi Kawado, Sigemi Osaki, Noriyuki Sakai | 1987-03-03 |
| 4596746 | Powder sheet for sintering | Sigemi Osaki | 1986-06-24 |
| 4563329 | Powder alloy sheet for forming a wear resistant layer on a workpiece | Sigemi Ohsaki, Yashuhumi Kawado | 1986-01-07 |
| 4482399 | Nitrided cast iron product and method for manufacturing the same | Toshihiko Hattori, Yashuhumi Kawado, Kouji Tarumoto | 1984-11-13 |
| 4292936 | Aluminum based alloy pistons for internal combustion engines | Kenji Miyake, Kouji Tobita | 1981-10-06 |