Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5195131 | Private branch exchange system | — | 1993-03-16 |
| 5066539 | Magnetic recording medium wherein the magnetic layer contains components having specified polar groups, particle diameters and surface areas or which are in specific relative ratios | Makoto Inoue, Hiroshi Miura, Kaneaki Niita, Yoshitaka Tsukidate, Takahiro Miyazaki | 1991-11-19 |