Issued Patents All Time
Showing 51–75 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6369491 | Surface acoustic wave device and method for manufacturing the same | Masatoshi Nakagawa, Makoto Tose, Yoshihiro Koshido, Michio Kadota, Toshimaro Yoneda | 2002-04-09 |
| 6278593 | Magnetoresistance effect elements and magnetic heads using the tunneling magnetoresistive effect | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 2001-08-21 |
| 6272097 | Optical head and apparatus for recording and reproducing optical information through the use of the optical head | Shigeru Nakamura, Toshiaki Tanaka, Takeshi Shimano | 2001-08-07 |
| 6154105 | Surface acoustic wave device with specific electrode materials and quartz substrate euler angles | Koji Fujimoto, Michio Kadota, Toshimaro Yoneda | 2000-11-28 |
| 6125087 | Optical pickup for optical disk apparatus | Kunikazu Ohnishi, Masayuki Inoue, Tohru Sasaki, Yukio Fukui, Takeshi Shimano | 2000-09-26 |
| 6011674 | Magnetoresistance effect multilayer film with ferromagnetic film sublayers of different ferromagnetic material compositions | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 2000-01-04 |
| 5930220 | Tracking method for optical disk apparatus using diffraction light | Takeshi Shimano, Akira Arimoto, Masayuki Inoue, Kunikazu Ohnishi, Yoshio Suzuki | 1999-07-27 |
| 5736235 | Magnetic recording medium having at least two magnetic layers with easy axes oriented in the same direction | Yoshibumi Matsuda, Masaaki Futamoto, Yoshinori Miyamura, Tokuho Takagaki, Hisashi Takano +5 more | 1998-04-07 |
| 5726837 | Multilayer magnetoresistance effect-type magnetic head | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 1998-03-10 |
| 5568331 | Method of head positioning and magnetic recording disk drive using the same | Kyo Akagi, Masaaki Futamoto, Fumio Kugiya, Yoshinori Miyamura, Hisashi Takano +8 more | 1996-10-22 |
| 5490133 | Optical information processing apparatus and method of controlling position of optical spot and reproducing signals | Shigeru Nakamura, Mariko Umeda, Akira Arimoto | 1996-02-06 |
| 5404344 | Recording/reproducing optical head producing focusing error signal from zero-th order diffracted light and tracking error signal from first order diffracted light | Nobuo Imada, Kunikazu Ohnishi, Tohru Sasaki, Masayuki Inoue, Akira Arimoto +1 more | 1995-04-04 |
| 5390061 | Multilayer magnetoresistance effect-type magnetic head | Ryoichi Nakatani, Masahiro Kitada, Naoki Koyama, Isamu Yuito, Hisashi Takano +14 more | 1995-02-14 |
| 5377178 | Data recording/reproducing method and apparatus using a recording medium having clock marks recorded in a wobbled track for read/write synchronization | Takeshi Maeda, Kiyoshi Matsumoto, Atsushi Saito, Hiroyuki Minemura, Tetsuya Fushimi | 1994-12-27 |
| 5361244 | Optical head and information recording apparatus | Shigeru Nakamura, Akira Arimoto, Mariko Umeda | 1994-11-01 |
| 5325244 | Magnetic recording data storage system | Hisashi Takano, Kyo Akagi, Mikio Suzuki, Yoshibumi Matsuda, Yoshinori Miyamura +8 more | 1994-06-28 |
| 5315573 | Non-linear optical saturable absorber layer in an optical disk to discriminate wavelength above or below a threshold level of intensity | Akira Arimoto, Kensuke Ogawa, Hirofumi Sukeda, Hisataka Sugiyama | 1994-05-24 |
| 5270987 | Magneto-optical recording and reproducing method, magneto-optical memory apparatus and magneto-optical recording medium therefor | Toshimitsu Kaku, Shigeru Nakamura, Masahiko Takahashi, Toshio Niihara, Harukazu Miyamoto +7 more | 1993-12-14 |
| 5253232 | Magneto-optical recording apparatus having a magnetic slider with increased rail width | Kyo Akagi, Masahiro Ojima | 1993-10-12 |
| 5235591 | Stack type optical disc apparatus, sealed and separate type optical head therefor and optical disc medium | Shigeru Nakamura, Eiichi Seya, Seiichi Mita, Masuo Kasai, Masahiro Ojima +5 more | 1993-08-10 |
| 5093822 | High-density magnetic recording and optical reproducing apparatus | Fumio Kugiya, Mikio Suzuki, Kyo Akagi, Masaaki Futamoto, Yoshinori Miyamura +2 more | 1992-03-03 |
| 5060208 | Magnetooptical recording method and apparatus utilizing shift adjustment | Nobuyuki Nagai, Takeshi Maeda, Atsushi Saito, Hitoshi Watanabe | 1991-10-22 |
| 5043960 | Overwritable magneto-optic recording and reproducing apparatus | Masahiro Ojima | 1991-08-27 |
| 5020041 | Magneto-optical memory apparatus having a floating magnetic head | Masahiro Ojima, Yoshinori Miyamura, Toyoji Okuwaki, Youichi Kawakubo, Yoshinori Takeuchi +1 more | 1991-05-28 |
| 5016234 | Two-laser collimated beam optical head with monitor | Shigeru Nakamura, Sadatsugi Machida, Masahiro Ojima | 1991-05-14 |