Issued Patents All Time
Showing 76–100 of 100 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D288558 | Optical pickup for use in optical discs | Haruhiko Takemura, Nobuhide Matsubayashi, Tsuneo Yanagida | 1987-03-03 |
| 4644514 | Head drive control apparatus | Ken Ohshima, Hiroo Okada | 1987-02-17 |
| 4631712 | Optical disk apparatus with beam energy correction for deviations in inclination | Nobuhide Matsubayashi, Hideyuki Kenjyo, Kiichi Kato | 1986-12-23 |
| 4611316 | Actuator operating center detecting circuit and optical disk apparatus with the detecting circuit | Toyoaki Takeuchi, Ken Ohshima, Hideyuki Kenjyo, Yoshiaki Ikeda | 1986-09-09 |
| 4611317 | Optical disk apparatus | Toyoaki Takeuchi, Ken Ohshima, Hideyuki Kenjyo, Yoshiaki Ikeda | 1986-09-09 |
| 4607359 | Optical recording/reproducing apparatus | Nobuhide Matsubayashi, Kiichi Kato | 1986-08-19 |
| 4577320 | Light power controlling apparatus | Shoji Yoshikawa | 1986-03-18 |
| 4574371 | Apparatus for recording and reproducing information on an optical disc | Haruhiko Takemura, Kiichi Kato | 1986-03-04 |
| 4545651 | Optical system for synthesizing plural light beams | Kiichi Kato | 1985-10-08 |
| 4539697 | FM Stereo demodulating circuit | Kohji Ishida, Tatsuo Numata | 1985-09-03 |
| D280033 | Vacuum cleaner | Isshin Miyamoto, Yasuo Nagamatsu, Toshiya Moriyama | 1985-08-06 |
| 4523329 | FM receiver | Kohji Ishida, Tatsuo Numata | 1985-06-11 |
| 4520280 | Apparatus for detecting input signal | Shozi Yoshikawa, Hiroshi Kodama, Ken Ohsima, Kiichi Kato, Kunio Yamamiya | 1985-05-28 |
| D278444 | Typewriter | Ishin Miyamoto, Yasuo Nagamatsu, Toshiya Moriyama | 1985-04-16 |
| 4510452 | Circuit having square-law transfer characteristic | Kohji Ishida | 1985-04-09 |
| 4508450 | System for checking defects on a flat surface of an object | Ken Ohshima | 1985-04-02 |
| D278247 | Typewriter | Ishin Miyamoto, Yasuo Nagamatsu, Toshiya Moriyama | 1985-04-02 |
| 4505585 | System for detecting defects on an optical surface | Shoji Yoshikawa, Ken Ohshima, Hiroshi Kodama, Kunio Yamamiya, Kiichi Kato | 1985-03-19 |
| 4499572 | Method for reading information or defect out of rotating disc | Shozi Yoshikawa, Hiroshi Kodama, Kunio Yamamiya, Kiichi Kato, Ken Ohsima | 1985-02-12 |
| 4499514 | Disc drive apparatus | Kunio Yamamiya, Hiroshi Kodama, Ken Ohshima, Shoji Yoshikawa, Kiichi Kato | 1985-02-12 |
| 4495407 | System for focusing an optical head onto a flat surface | Hiroshi Kodama, Ken Ohshima, Shoji Yoshikawa, Kunio Yamamiya, Kiichi Kato | 1985-01-22 |
| 4464050 | Apparatus for detecting optically defects | Kiichi Kato, Shoji Yoshikawa, Kunio Yamamiya, Hiroshi Kodama, Ken Ohsima | 1984-08-07 |
| 4430630 | Tuning circuit | — | 1984-02-07 |
| 4403156 | Frequency conversion circuit | — | 1983-09-06 |
| 4198578 | Transistor switching circuits with shortened response times | Akio Ozawa, Hideo Ito | 1980-04-15 |