Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8154890 | Inverter apparatus with control and voltage-sag circuitry to quickly restart when recovering from a mini power failure | Satoshi Yasuda, Hitoshi Teramoto | 2012-04-10 |
| 7755333 | Power system control apparatus and power system control method | Satoshi Yasuda, Hitoshi Teramoto, Masatoshi Takeda | 2010-07-13 |
| 7554675 | Light wavefront measuring instrument, light wavefront measuring method, and light source adjusting method | Nobuo Takeshita, Teruo Fujita, Toshiya Matozaki | 2009-06-30 |
| 5313441 | Optical recording and reproducing apparatus having a pickup head including a main prism with reflecting surfaces for splitting the reflected beam | Hitoshi Imai | 1994-05-17 |
| 5231626 | Wavelength selective optical recording and reproducing method | Motomu Yoshimura, Mitsuo Maeda, Kazuo Okada | 1993-07-27 |
| 5218586 | Optical recording and reproducing apparatus | — | 1993-06-08 |
| 5107409 | Optical head for optical information recording/reproducing apparatus | Kazuo Okada | 1992-04-21 |
| 5051975 | Optical recording and/or reproducing apparatus having a temperature adjusting device | Hitoshi Imai, Kazuo Okada | 1991-09-24 |
| 5016232 | Magneto-optic information-carrying medium including three magnetic layers | Kazuo Okada, Hitoshi Imai | 1991-05-14 |
| 5004900 | Focusing error detecting apparatus with light switching and detector sampling | Masatomo Seya, Kazuo Okada | 1991-04-02 |
| 4965785 | Optical head including a collimator having lenses of different focal lengths | Kazuo Okada | 1990-10-23 |
| 4908809 | Information-carrying medium equipment for magneto-optic reading and writing | Kazuo Okada | 1990-03-13 |
| 4881204 | Optical reading or writing apparatus | Hitoshi Imai, Kazuo Okada | 1989-11-14 |
| 4876666 | Wavelength selective optical data storage system | Hitoshi Imai, Kazuo Okada | 1989-10-24 |
| 4868807 | Wavelength selective optical data storage system | Kazuo Okada, Hitoshi Imai | 1989-09-19 |
| 4862442 | Focus detecting apparatus utilizing reflecting surface having variable reflectivity or transmissivity | Kazuo Okada, Hitoshi Imai | 1989-08-29 |
| 4841507 | Optical head for an optical recording and reproducing apparatus | Hitoshi Imai, Ryuichiro Arai, Kimiyuki Koyanagi | 1989-06-20 |