Issued Patents All Time
Showing 126–150 of 182 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5382465 | Anthraquinonic colorant and polarizing film containing the colorant | Tsutami Misawa, Hisato Itoh, Tsutomu Nishizawa, Masami Nakano | 1995-01-17 |
| 5353278 | Magneto-optical disk and method of manufacturing the same | Yoshiteru Murakami, Junichiro Nakayama, Akira Takahashi, Kenji Ohta, Hirotaka Toki | 1994-10-04 |
| 5347510 | Method of manufacturing a master plate where its guide groove has an inclined angle | Junji Hirokane, Junichiro Nakayama, Michinobu Mieda, Kenji Ohta | 1994-09-13 |
| 5343448 | External magnetic field device for a magnetooptical information recording and reproducing apparatus | Tomoyuki Miyake, Junichiro Nakayama, Takahiro Miyake, Kenji Ohta, Shozo Kobayashi | 1994-08-30 |
| 5338646 | Optical memory device having an improved light reflection or optical memory layer | Junichiro Nakayama, Tomoyuki Miyake, Kazuo Van, Kenji Ohta | 1994-08-16 |
| 5336531 | Magneto-optical disk and manufacturing methods thereof | Junichiro Nakayama, Kenji Ohta | 1994-08-09 |
| 5335220 | Optical recording element and driving system | Kenji Ohta, Tetsuya Inui, Akira Takahashi, Junji Hirokane, Yukinori Nishitani +2 more | 1994-08-02 |
| 5328740 | Magneto-optical recording medium and method for processing the surface | Junichiro Nakayama, Yoshiteru Murakami, Kenji Ohta | 1994-07-12 |
| 5305254 | Magneto-optic memory device | Yoshiteru Murakami, Junichiro Nakayama, Ichiro Hiramatsu, Akira Takahashi, Kenji Ohta +1 more | 1994-04-19 |
| 5303100 | Magnetic disk device with floating-type magnetic head | Junichiro Nakayama, Tomoyuki Miyake, Kenji Ohta | 1994-04-12 |
| 5278810 | Magneto-optical recording medium whereon recording is carried out with an overwriting function | Akira Takahashi, Junichiro Nakayama, Kenji Ohta | 1994-01-11 |
| 5270994 | Magneto-optical recording and reading method | Junichiro Nakayama, Tomoyuki Miyake, Kenji Ohta | 1993-12-14 |
| 5252769 | Anthraquinonic colorant and polarizing film containing the colorant | Tsutami Misawa, Hisato Itoh, Tsutomu Nishizawa, Masami Nakano | 1993-10-12 |
| 5252988 | Thermal head for thermal recording machine | Hiroshi Suzuki, Masato Kawanishi, Mitsuhiko Yoshikawa, Toshitaka Tamura, Takatoshi Mizoguchi +4 more | 1993-10-12 |
| 5233597 | Magneto-optical disk having a layer of varying thickness | Junichiro Nakayama, Kenji Ohta | 1993-08-03 |
| 5231613 | Magneto-optical recording device | Junichiro Nakayama, Tomoyuki Miyake, Kenji Ohta | 1993-07-27 |
| 5224068 | Recording method for magneto-optic memory medium | Tomoyuki Miyake, Mitsuo Ishii, Kenji Ohta | 1993-06-29 |
| 5214636 | Optical recording element having a plurality of thin film filtering layers and optical recording element having an electrically conductive layer | Toshio Ishikawa, Kazuo Van, Tomoyuki Miyake, Junichiro Nakayama, Kenji Ohta +1 more | 1993-05-25 |
| 5193082 | Optical/magnetic composite head having magnetic and optical heads in one integrated unit | Tomoyuki Miyake, Junichiro Nakayama, Akira Takahashi, Kenji Ohta | 1993-03-09 |
| 5187703 | Magneto-optical multilayer recording disk and method of reproducing the same | Junichiro Nakayama, Kenji Ohta, Toshio Ishikawa | 1993-02-16 |
| 5175721 | Magneto-optical recording and reading device with initilization | Junichiro Nakayama, Tomoyuki Miyake, Kenji Ohta | 1992-12-29 |
| 5170390 | Optical recording element and driving system | Kenji Ohta, Tetsuya Inui, Akira Takahashi, Junji Hirokane, Yukinori Nishitani +2 more | 1992-12-08 |
| 5160572 | Optical memory device and apparatus for manufacturing the same | Junichiro Nakayama, Kazuhiro Kimura, Kenji Ohta | 1992-11-03 |
| 5157568 | Floating type magnetic head device | Junichiro Nakayama, Tomoyuki Miyake, Kenji Ohta | 1992-10-20 |
| 5117415 | Optical card, a card holder and an apparatus for recording, reproducing and erasing information on and from the optical card | Kenji Ohta, Junichiro Nakayama, Kazuhiro Kimura, Hirotsugu Matoba, Shozo Kobayashi | 1992-05-26 |