Issued Patents All Time
Showing 201–225 of 249 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5087535 | Method of manufacturing photo-mask and photo-mask manufactured thereby | Junji Hirokane, Hiroyuki Katayama, Akira Takahashi, Tetsuya Inui, Junichi Washo +3 more | 1992-02-11 |
| 5088086 | Optical recording medium and the method of recording, reading, and erasing information using it | Kazuo Van, Hiroyuki Katayama, Akira Takahashi | 1992-02-11 |
| 5083301 | Optical card recording and reproducing device | Hirotsugu Matoba, Shigemi Maeda, Shozo Kobayashi | 1992-01-21 |
| 5082690 | Process for manufacturing a magneto-optic disc | Tomoyuki Miyake, Hiroyuki Katayama, Junichiro Nakayama, Yoshiteru Murakami | 1992-01-21 |
| 5081614 | Magneto-optical head utilizing central and peripheral portions of reflected light flux for different purposes | Akira Takahashi, Toshihisa Deguchi, Yoshiteru Murakami, Michinobu Mieda, Kazuo Van +2 more | 1992-01-14 |
| 5079113 | Photo-mask | Junji Hirokane, Akira Shibata, Yoshiyuki Nagahara, Kazuo Van, Michinobu Mieda +1 more | 1992-01-07 |
| 5077725 | Optical memory device and apparatus for manufacturing the same | Junichiro Nakayama, Kazuhiro Kimura, Hiroyuki Katayama | 1991-12-31 |
| 5077714 | Magneto-optical recording and reproducing device using the modulation of intensities of the magnetic field and light beam | Hiroyuki Katayama, Junichiro Nakayama, Tomoyuki Miyake, Akira Takahashi | 1991-12-31 |
| 5068841 | Magneto-optical recording/reproducing device | Junichiro Nakayama, Hiroyuki Katayama | 1991-11-26 |
| 5066381 | Target unit | Yoshiteru Murakami, Nobuyuki Takamori, Kenichi Hijikata, Takyuki Shingyoji, Kazushige Takaishi | 1991-11-19 |
| 5059473 | Optical recording medium and manufacturing method thereof | Akira Takahashi, Michinobu Mieda, Yoshiteru Murakami, Junichiro Nakayama, Tomoyuki Miyake | 1991-10-22 |
| 5053611 | Device for reducing mechanical vibrations when utilizing a magneto-optical card as a recording medium | Akira Takahashi, Yoshiteru Murakami, Junichiro Nakayama, Hiroyuki Katayama, Michinobu Mieda | 1991-10-01 |
| 5053252 | Method and apparatus for manufacturing optical memory devices | Kazuhiro Kimura, Hiroyuki Katayama, Junichiro Nakayama, Hiroyuki Ikenaga | 1991-10-01 |
| 5002813 | Substrate with protective film and method of manufacturing optical memory device using the same | Junichiro Nakayama, Hiroyuki Katayama, Akira Takahashi, Yoshiteru Murakami | 1991-03-26 |
| 4985885 | Optical memory device | Akira Takahashi, Hiroyuki Katayama, Junji Hirokane, Yoshiteru Murakami | 1991-01-15 |
| 4982710 | Electronic throttle valve opening control method and system therefor | Shigeru Horikoshi, Hayato Sugawara | 1991-01-08 |
| 4956243 | Optical memory element | Tomoyuki Miyake, Yoshiteru Murakami, Hiroyuki Katayama, Akira Takahashi | 1990-09-11 |
| 4946730 | Method of and photomask for manufacturing optical memory element | Tetsuya Inui, Junji Hirokane, Akira Shibata, Yoshiyuki Nagahara | 1990-08-07 |
| 4944375 | Reduction gearing device for a windshield wiper motor including a unidirectional brake | Yasuo Ohashi | 1990-07-31 |
| 4925776 | Optical memory element and manufacturing method thereof | Junji Hirokane, Akira Takahashi, Tetsuya Inui, Shohichi Katoh, Toshihisa Deguchi | 1990-05-15 |
| 4920437 | Disc clamping device | Junichi Washo, Shigeo Terashima, Toshihisa Deguchi, Masahiro Horii, Takao Hyuga | 1990-04-24 |
| 4917751 | Method of producing double sided optical memory disks | Hiroyuki Katayama, Akira Takahashi, Yoshiteru Murakami, Junji Hirokane | 1990-04-17 |
| 4911125 | Method and apparatus for controlling throttle valve in internal combustion engine | Hayato Sugawara, Shigeru Horikoshi | 1990-03-27 |
| 4881216 | Optical head in an optical memory device | Toshihisa Deguchi, Yoshikazu Fujii, Tetsuya Inui, Schohichi Katoh | 1989-11-14 |
| 4858212 | Recording method on magnetooptical disc with laser magnetic field | Akira Takahashi, Yoshiteru Murakami, Michinobu Mieda, Tomoyuki Miyake | 1989-08-15 |