Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4363662 | Abrasion resistant ferro-based sintered alloy | Kentaro Takahashi, Takeshi Hiraoka | 1982-12-14 |
| 4348232 | Abrasion resistant ferro-based sintered alloy | Takeshi Hiraoka, Masajiro Takeshita, Keiji Nakamura | 1982-09-07 |