Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12334968 | Wireless reception circuit | — | 2025-06-17 |
| 12146943 | Sensing method and sensing device | — | 2024-11-19 |
| 11846720 | Frequency sweep circuit and radar device | — | 2023-12-19 |
| 11635487 | Method and apparatus for controlling radar transmission based on comparing received radio waves | — | 2023-04-25 |
| 11112486 | Radar apparatus | — | 2021-09-07 |
| 7877063 | High-frequency amplifier, and transmission/reception system | Ryangsu Kim | 2011-01-25 |
| 7834704 | Low-noise amplifier circuit and receiving system | Katsumasa Hijikata | 2010-11-16 |
| 7816990 | Variable gain amplification circuit | Katsumasa Hijikata | 2010-10-19 |
| 7613440 | Mixer circuit | Katsumasa Hijikata | 2009-11-03 |
| 7587010 | Complex filter circuit and receiver circuit | Takashi Morie, Hiroya Ueno, Hirokuni Fujiyama, Akinori Matsumoto, Katsumasa Hijikata | 2009-09-08 |
| 7218204 | Contactless IC card | — | 2007-05-15 |
| 6677811 | Power supply circuit and RF transponder IC | — | 2004-01-13 |
| 6366172 | Semiconductor amplifier circuit and system | Hiroshi Kimura | 2002-04-02 |
| 6140687 | High frequency ring gate MOSFET | Hiroshi Shimomura, Takehiro Hirai, Takashi Nakamura | 2000-10-31 |