Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5028279 | Grain oriented electrical steel sheet having improved glass film properties and low watt loss and process for producing same | Toshiya Wada, Osamu Tanaka, Toshihiko Takata, Kunihide Takashima | 1991-07-02 |
| 4897131 | Grain-oriented electrical steel sheet having improved glass film properties and low watt loss | Toshiya Wada, Osamu Tanaka, Toshihiko Takata, Kunihide Takashima | 1990-01-30 |
| 4875947 | Method for producing grain-oriented electrical steel sheet having metallic luster and excellent punching property | Hisanobu Nakayama, Osamu Tanaka, Seiichi Senoo, Youichi Zaizen, Kouji Yamasaki | 1989-10-24 |