Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5546556 | Disk storage system have a defect map of the disk stored in a memory which is different from the disk | — | 1996-08-13 |
| 4733348 | Virtual-memory multiprocessor system for parallel purge operation | Takashi Hiraoka | 1988-03-22 |