Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4525209 | Process for producing low P chromium-containing steel | Takashi Yamauchi, Shigeaki Maruhashi, Keizo Yamada | 1985-06-25 |
| 4402884 | Method for producing ferro-nickel shots | Akira Kimura, Toru Hikage, Sadao Sugiura | 1983-09-06 |