Issued Patents All Time
Showing 26–50 of 53 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6163436 | Thin film magnet head with improved performance | Yoshitaka Sasaki, Atsushi Iijima | 2000-12-19 |
| 6144533 | Thin film magnetic head | Noboru Yamanaka, Yuzuru Iwai | 2000-11-07 |
| 6130805 | Thin film magnetic head having upper pole chip formed over insulating layer | Yoshitaka Sasaki, Atsushi Iijima | 2000-10-10 |
| 5991110 | Thin film magnetic head and magnetic recording and reproducing apparatus | Masanori Sakai, Makoto Yoshida, Mikio Matsuzaki | 1999-11-23 |
| 5847899 | Magnetic disk recording and reproducing apparatus | Masanori Sakai, Mikio Matsuzaki, Joichiro Ezaki | 1998-12-08 |
| 5844749 | Thin film magnetic head with an induction type magnetic transducer for suppressing sub-pulses | Masanori Sakai, Makoto Yoshida, Mikio Matsuzaki | 1998-12-01 |
| 5812349 | Magnetic head apparatus including separation features | Jun Shouji, Masanori Sakai | 1998-09-22 |
| 5530609 | Magnetic recording/reproducing method using a thin film magnetic | Keiji Koga, Tsuneo Kagotani, Akinori Nishizawa, Masanori Sakai | 1996-06-25 |
| 5416656 | Magnetic recording and reproducing head having a flat surface with round front ridge | Monjiro Momoi, Takamitsu Tsuna, Mikio Matsuzaki | 1995-05-16 |
| 5268799 | Magnetic recording and reproducing apparatus | Joichiro Ezaki, Masanori Sakai | 1993-12-07 |
| 5126901 | Thin film magnetic head having a narrow upper surface | Monjiro Momoi, Mikio Matsuzaki | 1992-06-30 |
| 5094896 | Magnetic recording medium comprising a glass substrate having a magnetic thin film of .gamma. Fe.sub.2 O.sub.3 which layer has a resistivity of from 0.03 to 3 .OMEGA.-cm | Haruyuki Morita, Monjiro Momoi | 1992-03-10 |
| 5094897 | Magnetic recording medium comprising a glass substrate and a gamma Fe.sub.2 .sub.3 magnetic thin film with specified X-ray diffraction and surface roughness | Haruyuki Morita, Monjiro Momoi | 1992-03-10 |
| 5072320 | Magnetic recording and reproducing apparatus having improved durability | Joichiro Ezaki, Masanori Sakai | 1991-12-10 |
| 4939604 | Magnetic recording and reproducing apparatus and a magnetic head used for the apparatus | Masanori Sakai, Joichiro Ezaki, Mikio Matsuzaki | 1990-07-03 |
| 4918556 | Magnetic disk recording and reproducing apparatus | Joichiro Ezaki, Masanori Sakai | 1990-04-17 |
| 4908727 | Disk with substrate of alumina silicate resin glass | Joichiro Ezaki | 1990-03-13 |
| 4803577 | Vertical magnetic recording system using rigid disk | Joichiro Ezaki | 1989-02-07 |
| 4642270 | Magnetic recording medium | Haruyuki Morita, Jiro Yoshinari | 1987-02-10 |
| 4636448 | Magnetic recording medium | Haruyuki Morita, Jiro Yoshinari | 1987-01-13 |
| 4599266 | Magnetic recording medium | Masatoshi Nakayama, Haruyuki Morita, Yasumichi Tokuoka, Toshiaki Izumi, Yuichi Kubota | 1986-07-08 |
| 4588654 | Magnetic recording medium | Takayoshi Kobuke, Toshiaki Izumi, Seitoku Saito | 1986-05-13 |
| 4563396 | Magnetic recording medium | Seitoku Saito | 1986-01-07 |
| 4533603 | Magnetic recording medium | Yoshimi Kitahara | 1985-08-06 |
| 4454195 | Magnetic recording medium | Yoshimi Kitahara | 1984-06-12 |