Issued Patents All Time
Showing 401–425 of 620 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656385 | Magnetic recording medium and information recording-reproduction method using the same | Junsaku Nakajima, Junji Hirokane, Yoshiteru Murakami, Kenji Ohta | 1997-08-12 |
| 5657299 | Magneto-optical recording medium | Junsaku Nakajima, Yoshiteru Murakami | 1997-08-12 |
| 5648162 | Magneto-optical recording medium and a method of recording and/or reproducing using the same | Junji Hirokane, Hiroyuki Katayama, Kenji Ohta | 1997-07-15 |
| 5645978 | Method for manufacturing optical disk | Tetsuya Inui, Kenji Ohta | 1997-07-08 |
| 5644566 | Magneto-optical recording medium | Junichiro Nakayama, Michinobu Mieda, Hiroyuki Katayama, Junji Hirokane, Kenji Ohta | 1997-07-01 |
| 5640374 | Magneto-optical recording medium having intermediate layer of in-plane magnetization and method of reproducing from the medium | Junji Hirokane, Michinobu Mieda, Junichiro Nakayama | 1997-06-17 |
| 5638111 | Optical probe element, and a recording and reproduction device using the optical probe element | Junji Hirokane, Hiroyuki Katayama | 1997-06-10 |
| 5637394 | Magneto-optical recording medium and method of reproducing magneto-optical information using thereof | Junsaku Nakajima, Naoyasu Iketani, Yoshiteru Murakami, Hiroyuki Katayama, Kenji Ohta | 1997-06-10 |
| 5635977 | Optical probe element and a recording and reproduction device using the optical probe element | Junji Hirokane, Hiroyuki Katayama | 1997-06-03 |
| 5635296 | Magneto-optical recording medium whereon overwriting is permitted by light intensity modulation | Junichiro Nakayama, Michinobu Mieda, Hiroyuki Katayama, Kenji Ohta | 1997-06-03 |
| 5634204 | Radio communication apparatus | Hironori Fujii | 1997-05-27 |
| 5633838 | Magneto-optical recording medium having two reproduction layers and a method for reproducing thereof | Junji Hirokane, Junichiro Nakayama, Michinobu Mieda | 1997-05-27 |
| 5631096 | Magneto optical memory device | Junsaku Nakajima, Yoshiteru Murakami, Kenji Ohta | 1997-05-20 |
| 5629908 | Magneto-optical recording medium having magnetization variable between in-plane magnetization and perpendicular magnetization | Junji Hirokane, Junichiro Nakayama, Michinobu Mieda | 1997-05-13 |
| 5616232 | Process for producing zinc-chromium alloy-electroplated steel plate | Makoto Nakazawa, Kenichiro Matsumura | 1997-04-01 |
| 5615182 | Magneto-optical disk and the reproducing method thereof | Yoshiteru Murakami, Junsaku Nakajima, Junichiro Nakayama, Kenji Ohta | 1997-03-25 |
| 5615180 | Magneto-optical recording medium and magneto-optical recording apparatus capable of performing a light-modulation overwriting operation | Michinobu Mieda, Junichiro Nakayama, Hiroyuki Katayama, Kenji Ohta | 1997-03-25 |
| 5602544 | Absolute encoder and method of generating its current position | Seisuke Tsutsumi | 1997-02-11 |
| 5600627 | Optical disk and a method for recording, reproducing, and deleting information on and from the optical disk | Junji Hirokane, Hiroyuki Katayama, Kenji Ohta | 1997-02-04 |
| 5595805 | Magneto-optical recording medium | Junichiro Nakayama, Junsaku Nakajima, Kenji Ohta | 1997-01-21 |
| 5586109 | Optical memory having narrowed track pitch | Tetsuya Inui, Kenji Ohta, Michinobu Mieda, Yoshiteru Murakami | 1996-12-17 |
| 5574544 | Image forming apparatus having image density gradation correction means | Kunihisa Yoshino, Mitsuo Motohashi, Satoshi Nishida | 1996-11-12 |
| 5563852 | Magneto-optical recording medium having a readout layer with varying composition and curie temperature | Yoshiteru Murakami, Naoyasu Iketani, Kenji Ohta | 1996-10-08 |
| 5546364 | Magneto-optical memory apparatus utilizing edges or recording mark to manage data | Hiroshi Fuji, Toshihisa Deguchi, Kunio Kojima, Takeshi Yamaguchi, Shigeo Terashima +1 more | 1996-08-13 |
| 5544149 | Optical recording medium, and apparatus and method for recording and reproducing information on the same | Hiroyuki Katayama, Junji Hirokane, Kenji Ohta | 1996-08-06 |