Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5271871 | Conductive material and process for preparing the same | Yoshiyuki Yasutomi, Tadahiko Miyoshi, Masahisa Sobue, Nobuyuki Yamashita, Kiyohiko Tanno +2 more | 1993-12-21 |
| 5085806 | Conductive material and process for preparing the same | Yoshiyuki Yasutomi, Tadahiko Miyoshi, Masahisa Sobue, Nobuyuki Yamashita, Kiyohiko Tanno +2 more | 1992-02-04 |
| 5019773 | Method and apparatus for detecting positions and/or speed of a moving body using two phase signals | Yasuyuki Sugiura, Rika Oue, Kunio Miyashita, Nobuyoshi Mutoh, Sumio Kobayashi +1 more | 1991-05-28 |
| 4983875 | Actuator | Ryoso Masaki, Masahiro Kayama, Hiroshi Hayashida, Hideki Nihei, Yasunori Katayama +2 more | 1991-01-08 |
| 4965504 | Control apparatus for inverter for driving AC motor | Shigeta Ueda, Kazuo Honda, Takashi Ikimi, Toshihiko Matsuda, Nobuyoshi Mutoh | 1990-10-23 |
| 4883735 | Negatively chargeable toner for use in dry electrophotography | Masao Watanabe | 1989-11-28 |
| 4840863 | Positively chargeable toner for use in dry electrophotography | Akira Otsu | 1989-06-20 |
| 4702989 | Process for producing pressure-fixable electrophotographic toners | Norihide Sugiyama, Katsuro Funato, Seiichi Yamamoto, Shigeo Miyamori | 1987-10-27 |
| 4629959 | Method and apparatus for controlling PWM inverter | Toshiaki Okuyama | 1986-12-16 |
| 4611158 | Method and apparatus for controlling PWM inverter | Yasuo Matsuda, Hisakazu Ninomiya | 1986-09-09 |
| 4532464 | Control apparatus for induction motor | Sadayuki Igarashi, Hisakazu Ninomiya, Sumio Kobayashi, Hiroyuki Tomita | 1985-07-30 |
| 4524186 | Process for producing water-absorbing resins | — | 1985-06-18 |
| 4524310 | Method and apparatus of controlling induction motors | Toshiaki Okuyama | 1985-06-18 |
| 4516065 | Control apparatus for AC motors | Hisakazu Ninomiya, Satoshi Ibori, Sadayuki Igarashi, Hiroshi Sugai | 1985-05-07 |
| 4486824 | PWM Converter with control circuit responsive to minimum holding current | Toshiaki Okuyama, Yuzuru Kubota | 1984-12-04 |
| 4459534 | Method for controlling induction motor and apparatus therefor | Toshiaki Okuyama | 1984-07-10 |
| 4451771 | Apparatus for controlling AC motor | Hisakazu Ninomiya, Satoshi Ibori | 1984-05-29 |
| 4437051 | Method and apparatus for controlling induction motor | Nobuyoshi Muto, Keijiro Sakai, Yasuo Matsuda | 1984-03-13 |
| 4344025 | Motor control system | Toshiaki Okuyama, Yuzuru Kubota, Katsunori Suzuki | 1982-08-10 |
| 4330741 | Electric control apparatus of induction motor | Toshiaki Okuyama, Yuzuru Kubota, Katsunori Suzuki | 1982-05-18 |
| 4328454 | Apparatus for controlling ac motor | Toshiaki Okuyama | 1982-05-04 |
| 4295084 | Control apparatus of synchronous motor having thyristor converter | Toshiaki Okuyama, Yuzuru Kubota, Katsunori Suzuki | 1981-10-13 |
| 4277735 | Control apparatus for induction motor | Toshiaki Okuyama, Yuzuru Kubota | 1981-07-07 |
| 4276504 | Control device for commutatorless motor | Toshiaki Okuyama, Yuzuru Kubota | 1981-06-30 |
| 4240020 | Control system for suppressing torque ripple in synchronous motor | Toshiaki Okuyama, Yuzuru Kubota, Katsunori Suzuki | 1980-12-16 |