Issued Patents All Time
Showing 1–25 of 25 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7518472 | Transmission line connecting structure and transmission/reception device | Kazutaka Mukaiyama, Yohei Ishikawa | 2009-04-14 |
| 7492243 | Planar circuit, high-frequency circuit device, and transmission and reception apparatus | Seiji Hidaka | 2009-02-17 |
| 7408430 | High-frequency circuit device and transmitting and receiving apparatus | — | 2008-08-05 |
| 7274273 | Dielectric resonator device, dielectric filter, duplexer, and high-frequency communication apparatus | Keiichi Hirose, Yutaka Sasaki, Toshiro Hiratsuka | 2007-09-25 |
| 6943651 | Dielectric resonator device, high frequency filter, and high frequency oscillator | Tetsuya Kochi, Hiroyasu Matsuzaki, Takahiro Baba, Koichi Sakamoto, Kazutaka Mukaiyama | 2005-09-13 |
| 6891452 | High-frequency circuit device and transmitter/receiver | Hiroyasu Matsuzaki, Kazutaka Mukaiyama, Koichi Sakamoto, Yohei Ishikawa, Tetsuya Kouchi | 2005-05-10 |
| 6778031 | High-frequency circuit device using slot line and communication apparatus having high frequency circuit device | Takahiro Baba, Koichi Sakamoto, Hiroyasu Matsuzaki, Takatoshi Kato, Yohei Ishikawa +1 more | 2004-08-17 |
| 6737687 | Field-effect transistor device having a uniquely arranged gate electrode | Takahiro Baba, Koichi Sakamoto, Hiroyasu Matsuzaki | 2004-05-18 |
| 6628230 | Radio frequency module, communication device, and radar device | Tetsuya Kouchi, Hiroyasu Matsuzaki, Kazutaka Mukaiyama, Koichi Sakamoto, Toshiro Hiratsuka +2 more | 2003-09-30 |
| 6606000 | Radio-frequency amplifier, radio-frequency module and communication device | Takatoshi Kato, Hiroyasu Matsuzaki | 2003-08-12 |
| 6538526 | Transmission line connection structure, high frequency module, and communication device | Toshiro Hiratsuka, Tomiya Sonoda, Kiyoshi Kanagawa | 2003-03-25 |
| 6531934 | Dielectric resonator, dielectric filter, dielectric duplexer, oscillator, and communication device | Toshiro Hiratsuka, Tomiya Sonoda, Kiyoshi Kanagawa | 2003-03-11 |
| 6512429 | Dielectric filter, transmission/reception sharing device, and communication device | Toshiro Hiratsuka, Tomiya Sonoda, Kiyoshi Kanagawa | 2003-01-28 |
| 6445263 | Dielectric resonator, dielectric filter, duplexer, and communication device | Tomiya Sonoda, Toshiro Hiratsuka, Yutaka Ida, Kiyoshi Kanagawa | 2002-09-03 |
| 6331808 | Dielectric resonator device | Toshiro Hiratsuka, Tomiya Sonoda | 2001-12-18 |
| 6249195 | Dielectric filter, dielectric duplexer, and transceiver having circular and polygonal electrode openings | Toshiro Hiratsuka, Tomiya Sonoda, Kiyoshi Kanagawa | 2001-06-19 |
| 6232854 | Dielectric resonator device, dielectric filter, oscillator, sharing device, and electronic apparatus | Toshiro Hiratsuka, Tomiya Sonoda, Yutaka Ida, Kiyoshi Kanagawa | 2001-05-15 |
| 6184758 | Dielectric resonator formed by polygonal openings in a dielectric substrate, and a filter, duplexer, and communication apparatus using same | Yohei Ishikawa, Toshiro Hiratsuka, Tomiya Sonoda, Yutaka Ida, Kiyoshi Kanagawa | 2001-02-06 |
| 6177854 | Dielectric resonator device | Toshiro Hiratsuka, Tomiya Sonoda | 2001-01-23 |
| 6121855 | Dielectric filter comprising at least one coupling member coupled to two coupling modes of a resonator and a communication device using the same | Toshiro Hiratsuka, Tomiya Sonoda, Kenichi Iio | 2000-09-19 |
| 6104261 | Dielectric resonator having a resonance region and a cavity adjacent to the resonance region, and a dielectric filter, duplexer and communication device utilizing the dielectric resonator | Tomiya Sonoda, Toshiro Hiratsuka, Yutaka Ida, Kiyoshi Kanagawa | 2000-08-15 |
| 6057745 | Dielectric filter, transmitting/receiving duplexer, and communication apparatus having depressed parallel plate mode below a resonant frequency | Tomiya Sonoda, Toshiro Hiratsuka, Yutaka Ida, Kiyoshi Kanagawa | 2000-05-02 |
| 6016090 | Dielectric resonator apparatus and high-frequency module | Kenichi Iio, Koichi Sakamoto, Sadao Yamashita, Toshihiro HIRATSUKA, Tomiya Sonoda | 2000-01-18 |
| 5736912 | Dielectric resonator frequency adjusting mechanism with a resin layer | Hirotsugu Abe, Yukio Higuchi | 1998-04-07 |
| 5311160 | Mechanism for adjusting resonance frequency of dielectric resonator | Yukio Higuchi, Hirotsugu Abe | 1994-05-10 |