Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5840131 | Process for producing grain-oriented electrical steel sheet having excellent glass film and magnetic properties | Kenichi Yakashiro, Hotaka Honma, Maremizu Ishibashi, Akira Sakaida, Tomoji Kumano +2 more | 1998-11-24 |
| 5782998 | Grain oriented electrical steel sheet having specular surface | Yoshiyuki Ushigami, Takeo Nagashima, Shuichi Yamazaki, Hiroyasu Fujii, Yozo Suga +2 more | 1998-07-21 |
| 5512110 | Process for production of grain oriented electrical steel sheet having excellent magnetic properties | Yasunari Yoshitomi, Yukio Matsuo, Hiroaki Masui, Yoshio Nakamura, Maremizu Ishibashi +3 more | 1996-04-30 |
| 5507883 | Grain oriented electrical steel sheet having high magnetic flux density and ultra low iron loss and process for production the same | Osamu Tanaka, Hiroaki Masui, Hotaka Honma, Tsutomu Haratani, Yoichi Mishima +2 more | 1996-04-16 |
| 5261972 | Process for producing grain-oriented electrical steel strip having high magnetic flux density | Yasunari Yoshitomi, Hiroaki Masui, Tsutomu Haratani | 1993-11-16 |
| 5049205 | Process for preparing unidirectional silicon steel sheet having high magnetic flux density | Nobuyuki Takahashi, Yozo Suga, Kiyoshi Ueno | 1991-09-17 |
| 4994120 | Process for production of grain oriented electrical steel sheet having high flux density | Nobuyuki Takahashi, Yozo Suga, Satoshi Arai | 1991-02-19 |
| 4992114 | Process for producing grain-oriented thin electrical steel sheet having high magnetic flux density by one-stage cold-rolling method | Shozaburo Nakashima, Koji Yamasaki | 1991-02-12 |
| 4979997 | Process for producing grain-oriented electrical steel sheet having superior magnetic and surface film characteristics | Hisashi Kobayashi, Osamu Tanaka | 1990-12-25 |
| 4979996 | Process for preparation of grain-oriented electrical steel sheet comprising a nitriding treatment | Hisashi Kobayashi, Masayoshi Minakuchi, Kenichi Yakashiro | 1990-12-25 |
| 4948433 | Process for preparation of thin grain oriented electrical steel sheet having excellent iron loss and high flux density | Shozaburo Nakashima, Kiyoshi Ueno | 1990-08-14 |
| 4938807 | Process for production of grain oriented electrical steel sheet having high flux density | Nobuyuki Takahashi, Yozo Suga | 1990-07-03 |
| 4863532 | Grain-oriented electromagnetic steel sheet | Toshiya Wada, Shozaburo Nakashima | 1989-09-05 |
| 4806176 | Process for producing a grain-oriented electromagnetic steel sheet having a high magnetic flux density | Jiro Harase, Toshiya Wada, Shozaburo Nakashima | 1989-02-21 |
| 4753692 | Grain-oriented electromagnetic steel sheet and process for producing the same | Toshiya Wada, Shozaburo Nakashima | 1988-06-28 |
| 4742706 | Strain imparting device | Eiji Sasaki, Mitsuo Murata, Hisashi Kobayashi, Hisao Kitsunezaki, Kengo Yoshioka +1 more | 1988-05-10 |
| 4692193 | Process for producing a grain-oriented electrical steel sheet having a low watt loss | Yasunari Yoshitomi, Kenzo Iwayama | 1987-09-08 |
| 4595426 | Grain-oriented silicon steel sheet and process for producing the same | Kenzo Iwayama, Yasunari Yoshitomi | 1986-06-17 |
| 4552596 | Grain-oriented electromagnetic steel sheet with improved watt loss | Tadashi Ichiyama, Shigehiro Yamaguchi, Tohru Iuchi | 1985-11-12 |
| 4548656 | Method and apparatus for reducing the watt loss of a grain-oriented electromagnetic steel sheet and a grain-oriented electromagnetic steel sheet having a low watt loss | Tetsuo Kimoto, Kiyoshi Orita | 1985-10-22 |
| 4318758 | Method for producing a grain-oriented magnetic steel sheet having good magnetic properties | Kenzo Iwayama, Takashi Sato | 1982-03-09 |
| 4293350 | Grain-oriented electromagnetic steel sheet with improved watt loss | Tadashi Ichiyama, Shigehiro Yamaguchi, Tohru Iuchi | 1981-10-06 |
| 4203784 | Grain oriented electromagnetic steel sheet | Osamu Tanaka | 1980-05-20 |