Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6306227 | Rolling bearing | Akio Okayama, Hiroshi Murakami, Kikuo Maeda, Toshiyuki Hoshino, Keniti Amano | 2001-10-23 |
| 5134267 | Method of conducting circumferential welding of electric welded steel line pipe to be laid by reel barge | Katsuomi Tamaki | 1992-07-28 |