Issued Patents All Time
Showing 26–50 of 63 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5216349 | Driving circuit for a switching element including an improved power supply arrangement | Akihoko Kanouda, Hideki Miyazaki, Kozo Watanabe, Kenichi Onda | 1993-06-01 |
| 5210479 | Drive circuit for an insulated gate transistor having overcurrent detecting and adjusting circuits | Shin Kimura, Norikazu Tokunaga, Nobuyoshi Mutoh, Satoshi Ibori, Shuuji Musha +1 more | 1993-05-11 |
| 5127361 | Resin coating device for optical fiber | Kohei Kobayashi | 1992-07-07 |
| 5115386 | Circuit for controlling an electric power supply apparatus, a method therefor and an uninterruptible power supply | Hidefumi Shirahama, Ikuo Yamato, Norikazu Tokunaga, Mitsufumi Iwanaka, Takeshi Nagano +1 more | 1992-05-19 |
| 5108200 | Coupler-type optical switch and process for producing the same | Tsuyoshi Nonaka, Toshifumi Hosoya, Toru Yamanishi | 1992-04-28 |
| 5091984 | Optical switch for use with optical fibers | Yuji Kobayashi, Toshifumi Hosoya, Tsuyoshi Nonaka | 1992-02-25 |
| 5088017 | DC-DC converter and a computer using the converter | Takao Yaginuma, Kenichi Onda, Kouichi Mizuta | 1992-02-11 |
| 5073179 | Method for controlling fiber diameter during optical fiber drawing process | Ichiro Yoshimura, Yoshiki Chigusa | 1991-12-17 |
| 5057721 | Level shift circuit for controlling a driving circuit | Hideki Miyazaki, Akihiko Kanouda, Kozo Watanabe, Kenichi Onda | 1991-10-15 |
| 5052779 | Polymer clad optical fiber | Makoto Honjo, Toru Yamanishi | 1991-10-01 |
| 5008586 | Solid state current sensing circuit and protection circuit | Hideki Miyazaki, Akihiko Kanouda, Kenichi Onda | 1991-04-16 |
| 4936123 | Key and key assembly | — | 1990-06-26 |
| 4933830 | Switching power supply | Masayoshi Sato, Norikazu Tokunaga, Hisao Amano | 1990-06-12 |
| 4897593 | Reactive power compensator for electric power system | Hiroo Konishi | 1990-01-30 |
| 4890009 | Monolithic integrated circuit device | Hideki Miyazaki, Kenichi Onda | 1989-12-26 |
| 4878163 | Pulse width modulated inverter with high-to-low frequency output converter | Ikuo Yamato, Norikazu Tokunaga, Hisao Amano | 1989-10-31 |
| 4866589 | Voltage resonance type switching power source apparatus | Masayoshi Satoo, Norikazu Tokunaga, Hisao Amano, Teruaki Odaka | 1989-09-12 |
| 4858096 | Resonant converter for stabilized operation of switching devices | Kenichi Onda, Kojin Abe, Yasunori Iwafuji, Hiroyuki Aoyama, Hideo Yoshinaka | 1989-08-15 |
| 4855887 | Current and frequency converter having means to reduce switching losses | Ikuo Yamato, Norikazu Tokunaga, Hisao Amano | 1989-08-08 |
| 4841427 | Capacitive voltage lowering circuit with dual outputs | Hideki Miyazaki, Kenichi Onda | 1989-06-20 |
| 4749535 | Method and apparatus for forming profiled plastic products involving extrusion, roller shaping and cutting | — | 1988-06-07 |
| 4664474 | Optical fiber and process for producing the same | Gotaro Tanaka, Kunio Fujiwara | 1987-05-12 |
| 4611158 | Method and apparatus for controlling PWM inverter | Hiroshi Nagase, Hisakazu Ninomiya | 1986-09-09 |
| 4599685 | Control circuit for power converter apparatus | Mitsuyuki Hombu, Shigeta Ueda, Katsunori Suzuki | 1986-07-08 |
| 4581693 | Apparatus for repeatedly applying short-circuit pulses to a current type inverter for output current control | Shigeta Ueda, Mitsuyuki Hombu | 1986-04-08 |