Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10707546 | Dielectric filter unit comprising three or more dielectric blocks and a transmission line for providing electromagnetically coupling among the dielectric resonators | Akio Yamamoto, Hiromichi Yoshikawa | 2020-07-07 |
| 10693205 | Resonator, filter, and communication device | Hiromichi Yoshikawa, Katsuro Nakamata | 2020-06-23 |
| 9666922 | Dielectric filter, duplexer, and communication device | Hiromichi Yoshikawa, Katsuro Nakamata | 2017-05-30 |
| 9153852 | Coaxial resonator, and dielectric filter, wireless communication module, and wireless communication device employing the coaxial resonator | Hiromichi Yoshikawa, Katsuro Nakamata | 2015-10-06 |
| 8970326 | Coaxial resonator and dielectric filter formed from a dielectric block with at least one inner conductor surrounded by a non-conductive recess | Hiromichi Yoshikawa, Katsuro Nakamata, Soutarou Kukita | 2015-03-03 |
| 8878634 | Bandpass filter, and wireless communication module and wireless communication device using the bandpass filter | Hiromichi Yoshikawa | 2014-11-04 |
| 8648674 | Filter circuit, and wireless communication module and wireless communication device that uses the same | Hiromichi Yoshikawa, Hiroshi Ninomiya | 2014-02-11 |
| 7596357 | High-frequency switching circuit, high-frequency module, and wireless communications device | Katsuro Nakamata, Hiroshi Ninomiya, Shinji Isoyama, Tooru Takahashi | 2009-09-29 |
| 7149496 | High-frequency module and radio communication apparatus | Katsuro Nakamata, Hiroshi Ninomiya, Yasuhiko Fukuoka, Satoru Iwasaki, Kenta Fukuyama | 2006-12-12 |