Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6845239 | Positioning system and position calculating method in mobile communication system | Tsuyoshi Sato, Shinichi Hirata | 2005-01-18 |
| 6332001 | Method of coding image data | Akifumi Arayashiki, Shin Hirata | 2001-12-18 |
| 5832123 | Method and apparatus for producing an enhanced two-grayscale image | — | 1998-11-03 |
| 5809231 | Image transmission system | Naoki Yokoyama | 1998-09-15 |
| 5617333 | Method and apparatus for transmission of image data | Akifumi Arayashiki, Hiroyo Sato, Eiji Yokokawa | 1997-04-01 |