Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4846939 | Method for producing a grain-oriented electrical steel sheet having an ultra low watt loss | Makoto Yoshida, Teruaki Izaki, Osamu Tanaka | 1989-07-11 |
| 4842958 | Chromate surface treated steel sheet | Tomonari Ohga, Toshinori Katayama, Fumio Yamamoto | 1989-06-27 |
| 4800134 | High corrosion resistant plated composite steel strip | Teruaki Izaki, Makoto Yoshida, Masami Osawa, Akinori Maruta | 1989-01-24 |