Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5858126 | Grain-oriented electrical steel sheet and material having very high magnetic flux density and method of manufacturing same | Ryutarou Kawamata, Yoshio Nakamura, Isao Iwanaga, Norito Abe | 1999-01-12 |
| 5394721 | Method of producing permalloy cores | Kenzo Iwayama, Tsunehiro Shimizu, Hidehiko Sumitomo, Akira Amemura, Osamu Tanaka | 1995-03-07 |
| 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, Hiromichi Yasumoto | 1991-07-02 |
| 4897131 | Grain-oriented electrical steel sheet having improved glass film properties and low watt loss | Toshiya Wada, Osamu Tanaka, Toshihiko Takata, Hiromichi Yasumoto | 1990-01-30 |
| 4371405 | Process for producing grain-oriented silicon steel strip | Jiro Harase, Shozaburo Nakashima | 1983-02-01 |
| 4339287 | Process for producing grain-oriented silicon steel strip | Fumio Matsumoto, Satohiro Hayami, Tsutomu Haratani, Toshio Kikuma | 1982-07-13 |
| 4302257 | Process for producing a grain-oriented silicon steel sheet | Fumio Matsumoto, Jirou Harase, Hisanobu Nakayama | 1981-11-24 |