Issued Patents All Time
Showing 151–175 of 249 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5347510 | Method of manufacturing a master plate where its guide groove has an inclined angle | Junji Hirokane, Hiroyuki Katayama, Junichiro Nakayama, Michinobu Mieda | 1994-09-13 |
| 5343448 | External magnetic field device for a magnetooptical information recording and reproducing apparatus | Tomoyuki Miyake, Hiroyuki Katayama, Junichiro Nakayama, Takahiro Miyake, Shozo Kobayashi | 1994-08-30 |
| 5341362 | Optical memory device having guide tracks shaped for increasing the quality of information signals | Yoshikazu Fujii, Tetsuya Inui, Toshihisa Deguchi | 1994-08-23 |
| 5338646 | Optical memory device having an improved light reflection or optical memory layer | Junichiro Nakayama, Tomoyuki Miyake, Hiroyuki Katayama, Kazuo Van | 1994-08-16 |
| 5336531 | Magneto-optical disk and manufacturing methods thereof | Junichiro Nakayama, Hiroyuki Katayama | 1994-08-09 |
| 5335220 | Optical recording element and driving system | Tetsuya Inui, Hiroyuki Katayama, Akira Takahashi, Junji Hirokane, Yukinori Nishitani +2 more | 1994-08-02 |
| 5334879 | Feeding system and feeding method for a submarine cable communication system | Yoshiyuki Inoue, Masaaki Takahashi | 1994-08-02 |
| 5331625 | Optical disc with antistatic coating containing tin oxide and phosphorous | Michinobu Mieda, Toshikazu Nagaura, Hirotoshi Takemori, Hiroo Yoshidome | 1994-07-19 |
| 5331612 | Magneto-optical recording apparatus using the magnetic field modulation method | Yoshiteru Murakami, Akira Takahashi | 1994-07-19 |
| 5328740 | Magneto-optical recording medium and method for processing the surface | Junichiro Nakayama, Yoshiteru Murakami, Hiroyuki Katayama | 1994-07-12 |
| 5328256 | Anti-skid brake control device | Kousaku Shimada, Hayato Sugawara | 1994-07-12 |
| 5325344 | Magneto-optical recording and reproducing device having integrally formed recording and reproducing magnetic heads | Akira Takahashi, Tetsurou Muramatsu, Tatsushi Yamamoto, Toshio Ishikawa | 1994-06-28 |
| 5317555 | Optical head device utilizing partially overlapping light spots to read information from a readout layer | Akira Takahashi, Yoshiteru Murakami, Junsaku Nakajima | 1994-05-31 |
| 5313357 | Magnetic storage device and manufacturing method thereof | Junichiro Nakayama, Tetsurou Muramatsu | 1994-05-17 |
| 5305300 | Magneto optical storage device using a multi-layer film of Pt/Co laminated sections | Akira Takahashi, Junsaku Nakajima, Yoshiteru Murakami | 1994-04-19 |
| 5305254 | Magneto-optic memory device | Yoshiteru Murakami, Junichiro Nakayama, Ichiro Hiramatsu, Akira Takahashi, Kazuo Van +1 more | 1994-04-19 |
| 5303100 | Magnetic disk device with floating-type magnetic head | Junichiro Nakayama, Hiroyuki Katayama, Tomoyuki Miyake | 1994-04-12 |
| 5293359 | Magnetic recording and reproducing apparatus having a ferrimagnetic recording medium, a magnetic head and first and second light sources | Akira Takahashi, Junsaku Nakajima, Yoshiteru Murakami, Junji Hirokane | 1994-03-08 |
| 5286583 | Method of manufacturing a photomask for an optical memory | Junji Hirokane, Tetsuya Inui, Michinobu Mieda | 1994-02-15 |
| 5278810 | Magneto-optical recording medium whereon recording is carried out with an overwriting function | Akira Takahashi, Junichiro Nakayama, Hiroyuki Katayama | 1994-01-11 |
| 5270995 | Method for recording and reproducing information by varying a work function of a recording medium and device for the same | Katsuo Wada, Etsuji Minami | 1993-12-14 |
| 5270994 | Magneto-optical recording and reading method | Junichiro Nakayama, Tomoyuki Miyake, Hiroyuki Katayama | 1993-12-14 |
| 5260150 | Photo-mask with light shielding film buried in substrate | Junji Hirokane, Akira Shibata, Yoshiyuki Nagahara, Kazuo Van, Michinobu Mieda +1 more | 1993-11-09 |
| 5233597 | Magneto-optical disk having a layer of varying thickness | Junichiro Nakayama, Hiroyuki Katayama | 1993-08-03 |
| 5231613 | Magneto-optical recording device | Junichiro Nakayama, Tomoyuki Miyake, Hiroyuki Katayama | 1993-07-27 |