Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6128166 | Magnetic head for increasing track density of a magnetic disk | Yoichiro Tanaka, Norio Nakamura, Yuji Kubota, Takashi Hikosaka | 2000-10-03 |
| 6078460 | Head positioning control system for use in a disk drive | — | 2000-06-20 |
| 6025971 | Magnetic disk drive using a nonvolatile solid state memory to store defect information | Tetsuo Inoue, Takehito Yamada, Shigeru Takekado | 2000-02-15 |
| 5786957 | Magnetic disk device using non-aligned read and write heads with tracking servos and a rotary actuator | Tetsuo Inoue, Takehito Yamada, Shigeru Takekado | 1998-07-28 |
| 4964009 | Magnetic disk having an index area and a limited number of radially extending servo sections | Nobuyuki Takagi, Toshihiro Sugaya, Norio Nakamura | 1990-10-16 |
| 4896240 | Magnetic disk having an index area and a limited number of radially extending servo sections | Nobuyuki Takagi, Toshihiro Sugaya, Norio Nakamura | 1990-01-23 |
| 4737869 | Magnetic disk having data area and index servo area and servo system for positioning read/write head on magnetic disk | Toshihiro Sugaya, Nobuyuki Takagi, Norio Nakamura | 1988-04-12 |