Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825807 | Apparatus for applying anti-sticking agent on annealed oriented electrical sheet steel in coil | Takaaki Ohsawa, Hirokazu Haga, Akira Tanabe | 1989-05-02 |
| 4750949 | Grain-oriented electrical steel sheet having stable magnetic properties resistant to stress-relief annealing, and method and apparatus for producing the same | Hisashi Kobayashi, Kikuji Hirose, Toshio Tsukada, Hirofumi Yamashita | 1988-06-14 |
| 4632708 | Annealing separator used in the finishing annealing step for producing a grain-oriented electrical steel sheet | Toyohiko Konno, Yozo Suga, Hajime Komatsu | 1986-12-30 |
| 4618377 | Method for surface treatment of electrical steel sheet | Kikuzi Hirose, Tooru Sakamoto | 1986-10-21 |
| 4537792 | Method of applying an annealing separator to grain oriented magnetic steel sheets | Minoru Kitayama, Kikuji Hirose, Masashi Tanida | 1985-08-27 |
| 4363677 | Method for treating an electromagnetic steel sheet and an electromagnetic steel sheet having marks of laser-beam irradiation on its surface | Tadashi Ichiyama, Shigehiro Yamaguchi, Tohru Iuchi, Yozo Suga | 1982-12-14 |
| 4190468 | Process for coating an electrical steel sheet with an anti-sticking layer | Minoru Kitayama | 1980-02-26 |