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, Kunihide Takashima, Hiromichi Yasumoto | 1991-07-02 |
| 4897131 | Grain-oriented electrical steel sheet having improved glass film properties and low watt loss | Toshiya Wada, Osamu Tanaka, Kunihide Takashima, Hiromichi Yasumoto | 1990-01-30 |
| 4627400 | Porting system for internal combustion engine | Yoshiharu Nakayama | 1986-12-09 |