Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6194856 | Motor driving apparatus including a modularized current control circuit and method of controlling the same | Makoto Takase, Hisakazu Ninomiya | 2001-02-27 |
| 5852556 | Power converter | — | 1998-12-22 |
| 5402747 | Method of growing crystal | Shunji Miyahara, Toshiyuki Fujiwara, Takayuki Kubo, Hideki Fujiwara, Shuichi Inami +1 more | 1995-04-04 |
| 5363796 | Apparatus and method of growing single crystal | Shunji Miyahara, Toshiyuki Fujiwara, Takayuki Kubo, Hideki Fujiwara, Shuichi Inami | 1994-11-15 |
| 5200678 | Motor driving control apparatus | Mutuo Tokashiki, Kazumasa Sugiyama, Hiroshi Sugai, Kazuyuki Nakagawa | 1993-04-06 |
| 5019773 | Method and apparatus for detecting positions and/or speed of a moving body using two phase signals | Yasuyuki Sugiura, Rika Oue, Kunio Miyashita, Hiroshi Nagase, Nobuyoshi Mutoh +1 more | 1991-05-28 |
| 4947282 | Thyristor valve with improved gate pulse generating scheme | — | 1990-08-07 |
| 4808933 | Rotating speed measuring apparatus having a corrector for low and high speeds using angle and frequency transducers | Mutsuo Tokashiki, Hiroyuki Tomita, Tadashi Okawa, Hiroshi Sugai | 1989-02-28 |
| 4733070 | Rotational information output device | Tadashi Ookawa, Hiroyuki Tomita, Masataka Yahara, Masaharu Muramatu, Hiroshi Sugai +1 more | 1988-03-22 |
| 4693614 | Apparatus for detecting slag outflow | Akio Hatono | 1987-09-15 |
| 4590989 | Electromagnetic stirrer | — | 1986-05-27 |
| 4580449 | Method and apparatus for determining the surface level of molten metal | Akio Hatono | 1986-04-08 |
| 4568200 | Method of and apparatus for measuring surface temperature of metallic body | Akio Hatono, Toshiyuki Sugimura, Shunji Mihayara | 1986-02-04 |
| 4532464 | Control apparatus for induction motor | Sadayuki Igarashi, Hiroshi Nagase, Hisakazu Ninomiya, Hiroyuki Tomita | 1985-07-30 |
| 4475152 | Water-cooled high voltage device | Hiroo Ikegame, Tadashi Takahashi | 1984-10-02 |
| 4414599 | Arrester and a semiconductor circuit arrangement with a protection device including the same | — | 1983-11-08 |
| 4325114 | Gate controlling circuit for a thyristor converter | Tadashi Takahashi, Hidetoshi Ino | 1982-04-13 |
| 4320445 | Gate control circuit for thyristor converter | Tadashi Takahashi, Hidetoshi Ino, Takami Sakai | 1982-03-16 |
| 4313156 | Gate controlling circuit for a thyristor converter | Tadashi Takahashi, Hidetoshi Ino | 1982-01-26 |
| 4282568 | Electric power converting apparatus | Tetsushi Matsushita | 1981-08-04 |
| 4248809 | Method and apparatus for detecting damage of blast furnace inside wall repairing materials | Toshihiko Sakai, Takao Suzuki | 1981-02-03 |
| 4236200 | Semiconductor circuit having a series-connected reactor | Koji Imai, Ko Kumai, Toshihiko Tsuji | 1980-11-25 |
| 4210023 | Method and apparatus for measuring slag foaming using microwave lever meter | Yoshiyasu Sakamoto, Akio Hatono | 1980-07-01 |