Issued Patents All Time
Showing 1–22 of 22 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5782998 | Grain oriented electrical steel sheet having specular surface | Yoshiyuki Ushigami, Takeo Nagashima, Shuichi Yamazaki, Hiroyasu Fujii, Tadashi Nakayama +2 more | 1998-07-21 |
| 5614034 | Process for producing ultrahigh silicon electrical thin steel sheet by cold rolling | Hotaka Honma, Yoshiyuki Ushigami, Syuji Kitahara | 1997-03-25 |
| 5545263 | Process for production of grain oriented electrical steel sheet having superior magnetic properties | Yasunari Yoshitomi, Takehide Senuma, Nobuyuki Takahashi | 1996-08-13 |
| 5478410 | Process for producing grain-oriented electrical steel sheet having low watt loss | Yoshiyuki Ushigami, Takeo Nagashima | 1995-12-26 |
| 5370748 | Process for manufacturing double oriented electrical steel sheet having high magnetic flux density | Yoshiyuki Ushigami | 1994-12-06 |
| 5346559 | Process for manufacturing double oriented electrical steel sheet having high magnetic flux density | Yoshiyuki Ushigami, Satoshi Arai, Yasunari Yoshitomi, Nobuyuki Takahashi, Takehide Senuma | 1994-09-13 |
| 5308411 | Ultrahigh silicon, grain-oriented electrical steel sheet and process for producing the same | Yoshiyuki Ushigami, Hodaka Honma, Nobuyuki Takahashi | 1994-05-03 |
| 5261971 | Process for preparation of grain-oriented electrical steel sheet having superior magnetic properties | Yasunari Yoshitomi, Takehide Senuma, Nobuyuki Takahashi | 1993-11-16 |
| 5259892 | Process for producing non-oriented electromagnetic steel sheet having excellent magnetic properties after stress relief annealing | Takeshi Kubota | 1993-11-09 |
| 5145533 | Process for producing grain-oriented electrical steel sheet having excellent magnetic characteristic | Yasunari Yoshitomi, Nobuyuki Takahashi, Yoshiyuki Ushigami, Tadashi Nakayama | 1992-09-08 |
| 5082509 | Method of producing oriented electrical steel sheet having superior magnetic properties | Yoshiyuki Ushigami, Toyohiko Konno, Kiyoshi Ueno, Mikio Itoh, Toshio Nishiyama +1 more | 1992-01-21 |
| 5049205 | Process for preparing unidirectional silicon steel sheet having high magnetic flux density | Nobuyuki Takahashi, Katsuro Kuroki, Kiyoshi Ueno | 1991-09-17 |
| 4997493 | Process for production of double-oriented electrical steel sheet having high flux density | Yoshiyuki Ushigami, Tadashi Nakayama, Nobuyuki Takahashi | 1991-03-05 |
| 4994120 | Process for production of grain oriented electrical steel sheet having high flux density | Nobuyuki Takahashi, Katsuro Kuroki, Satoshi Arai | 1991-02-19 |
| 4938807 | Process for production of grain oriented electrical steel sheet having high flux density | Nobuyuki Takahashi, Katsuro Kuroki | 1990-07-03 |
| 4929286 | Method for producing a grain-oriented electrical steel sheet | Hajime Komatsu, Mitsuro Tanino, Toyohiko Konno | 1990-05-29 |
| 4632708 | Annealing separator used in the finishing annealing step for producing a grain-oriented electrical steel sheet | Toyohiko Konno, Motoharu Nakamura, Hajime Komatsu | 1986-12-30 |
| 4623407 | Method for producing a grain-oriented electrical steel sheet having a high magnetic flux density | Toyohiko Konno, Tadashi Nakayama | 1986-11-18 |
| 4623406 | Method for producing a grain-oriented electrical steel sheet having a high magnetic flux density | Fumio Matsumoto, Tadashi Nakayama | 1986-11-18 |
| 4592789 | Process for producing a grain-oriented electromagnetic steel sheet or strip | Yakichiro Kawamo, Tadao Nozawa, Tadashi Nakayama | 1986-06-03 |
| 4437909 | Process for producing a grain-oriented silicon steel sheet or strip having excellent magnetic properties | Kensuke Mori, Hiromi Matsumoto, Tadashi Nakayama, Fumio Matsumoto | 1984-03-20 |
| 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, Motoharu Nakamura | 1982-12-14 |