Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6415155 | Location system and method for identifying position of mobile terminal that can communicate based on repeater in radio zone, and mobile terminal that can communicate based on repeater in radio zone | Kimio Muya, Katsuhiko Kumamoto | 2002-07-02 |
| 6349211 | Position display system of mobile terminal | Katsuhiko Kumamoto, Kimio Muya, Hiroyuki Kurokawa, Ryuichi Iwagami | 2002-02-19 |
| 6347230 | Position display system of mobile terminal | Katsuhiko Kumamoto, Kimio Muya, Hiroyuki Kurokawa, Ryuichi Iwagami | 2002-02-12 |
| 6134448 | System for detecting positional information | Yoshiteru Shoji, Yoshitaka Ohta | 2000-10-17 |