Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797167 | Method for the production of oriented silicon steel sheet having excellent magnetic properties | Hisanobu Nakayama, Shouzaburo Nakashima, Yoshiaki Shimoyama | 1989-01-10 |