Issued Patents All Time
Showing 151–175 of 182 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5107471 | Magnetic head having a rectangular configuration for use in a magneto-optical recording system | Tomoyuki Miyake, Kenji Ohta, Junichiro Nakayama | 1992-04-21 |
| 5095350 | Magneto-optic memory medium | Kenji Ohta, Akira Takahashi, Tomokazu Ise, Tomoyuki Miyake, Junichiro Nakayama | 1992-03-10 |
| 5088086 | Optical recording medium and the method of recording, reading, and erasing information using it | Kazuo Van, Akira Takahashi, Kenji Ohta | 1992-02-11 |
| 5087535 | Method of manufacturing photo-mask and photo-mask manufactured thereby | Junji Hirokane, Akira Takahashi, Tetsuya Inui, Kenji Ohta, Junichi Washo +3 more | 1992-02-11 |
| 5082690 | Process for manufacturing a magneto-optic disc | Tomoyuki Miyake, Junichiro Nakayama, Yoshiteru Murakami, Kenji Ohta | 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 |
| 5077714 | Magneto-optical recording and reproducing device using the modulation of intensities of the magnetic field and light beam | Kenji Ohta, Junichiro Nakayama, Tomoyuki Miyake, Akira Takahashi | 1991-12-31 |
| 5077725 | Optical memory device and apparatus for manufacturing the same | Junichiro Nakayama, Kazuhiro Kimura, Kenji Ohta | 1991-12-31 |
| 5068841 | Magneto-optical recording/reproducing device | Junichiro Nakayama, Kenji Ohta | 1991-11-26 |
| 5058099 | Magneto-optical memory element | Yoshiteru Murakami, Akira Takahashi, Kazuo Van, Junichiro Nakayama, Kouji Ohta | 1991-10-15 |
| 5053611 | Device for reducing mechanical vibrations when utilizing a magneto-optical card as a recording medium | Akira Takahashi, Yoshiteru Murakami, Junichiro Nakayama, Kenji Ohta, Michinobu Mieda | 1991-10-01 |
| 5053252 | Method and apparatus for manufacturing optical memory devices | Kazuhiro Kimura, Junichiro Nakayama, Kenji Ohta, Hiroyuki Ikenaga | 1991-10-01 |
| 5036897 | Thermal printing head manufacturing method | Toshitaka Tamura, Hiroshi Suzuki, Masato Kawanishi | 1991-08-06 |
| 5002813 | Substrate with protective film and method of manufacturing optical memory device using the same | Junichiro Nakayama, Kenji Ohta, Akira Takahashi, Yoshiteru Murakami | 1991-03-26 |
| 4985885 | Optical memory device | Kenji Ohta, Akira Takahashi, Junji Hirokane, Yoshiteru Murakami | 1991-01-15 |
| 4956243 | Optical memory element | Tomoyuki Miyake, Yoshiteru Murakami, Akira Takahashi, Kenji Ohta | 1990-09-11 |
| 4917751 | Method of producing double sided optical memory disks | Kenji Ohta, Akira Takahashi, Yoshiteru Murakami, Junji Hirokane | 1990-04-17 |
| 4839251 | Photo-mask for use in manufacturing an optical memory disc, a method for making the photo-mask and a method for manufacturing the optical memory disc | Kenji Ohta, Akira Takahashi, Tetsuya Inui, Junji Hirokane | 1989-06-13 |
| 4818648 | Optical memory element | Kenji Ohta, Akira Takahashi, Tetsuya Inui, Junji Hirokane, Yoshiteru Murakami | 1989-04-04 |
| 4792474 | Optical memory element | Yoshiteru Murakami, Akira Takahashi, Yoshikazu Fujii, Kenji Ohta | 1988-12-20 |
| 4786559 | Magnetooptical storage element | Yoshiteru Murakami, Akira Takahashi, Tomoyuki Miyake, Kenji Ohta, Michinobu Mieda | 1988-11-22 |
| 4764441 | Photo-mask for production of substrate for optical memory element | Kenji Ohta, Junji Hirokane, Tetsuya Inui, Akira Takahashi | 1988-08-16 |
| 4740947 | Dual surface optical memory disc | Kenji Ohta, Akira Takahashi, Junji Hirogane, Yoshiteru Murakami | 1988-04-26 |
| 4719137 | Magneto-optic memory element | Kenji Ohta, Akira Takahashi, Junji Hirogane, Yoshiteru Murakami | 1988-01-12 |
| 4717628 | Magnetooptical storage element | Akira Takahashi, Yoshiteru Murakami, Junji Hirokane, Kenji Ohta | 1988-01-05 |