Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4979059 | System for storing data in a separate memory when the number of positioning errors of a magnetic disc exceeds a threshold | — | 1990-12-18 |
| 4954909 | Data memorizing device which determines the movement of the recording head | — | 1990-09-04 |
| 4954908 | Record medium control apparatus | — | 1990-09-04 |
| 4937687 | Memory unit capable of detecting error in regenerated data from a memory medium | — | 1990-06-26 |
| 4937688 | Gain margin detector for a memory unit utilizing a servo control loop | — | 1990-06-26 |
| 4887173 | Storage apparatus including head drive control | Kimiyo Takahashi | 1989-12-12 |
| 4882720 | Memory device including a rotating disk and means for detecting change in frictional resistance between the disk and a read/record head | — | 1989-11-21 |
| 4811125 | Information recording/regenerating circuit for a memory unit | — | 1989-03-07 |
| 4809248 | Memory device including a rotating disk and means for detecting change in frictional resistance between the disk and a read/record head | — | 1989-02-28 |