Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12301178 | Bias circuit, amplifier, and bias voltage controlling method | — | 2025-05-13 |
| 7809468 | Transportation state notification system and method, program, and information storage medium | Takashi Yamagishi, Kazufumi Kato, Katsutoshi Ozawa | 2010-10-05 |
| 7277774 | Transportation state notification system and method, and information storage medium | Takashi Yamagishi, Kazufumi Kato, Katsutoshi Ozawa | 2007-10-02 |