Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9083069 | Power combiner/distributor, power amplifying circuit, and wireless apparatus | — | 2015-07-14 |
| 7463109 | Apparatus and method for waveguide to microstrip transition having a reduced scale backshort | — | 2008-12-09 |
| 6909343 | Resonator, filter, oscillator, duplexer, and communication apparatus | — | 2005-06-21 |
| 6828867 | Slot electrode dielectric resonator, inductor, capacitor, dielectric filter, oscillator, and communication device | Yohei Ishikawa, Hiroaki Tanaka, Yutaka Ida | 2004-12-07 |
| 6717492 | Planar dielectric integrated circuit with line conversion conductor patterns | Yohei Ishikawa, Koichi Sakamoto, Sadao Yamashita | 2004-04-06 |
| 6661315 | Resonator, filter, oscillator, duplexer, and communication apparatus | — | 2003-12-09 |
| 6556107 | Dielectric resonator, inductor, capacitor, dielectric filter, oscillator, and communication device | Yohei Ishikawa, Hiroaki Tanaka, Yutaka Ida | 2003-04-29 |
| 6535089 | High-frequency circuit device and communication apparatus using the same | — | 2003-03-18 |
| 6515554 | High-frequency circuit device and communication apparatus | Yohei Ishikawa, Takatoshi Kato, Koichi Sakamoto | 2003-02-04 |
| 6504456 | Communication device having a spurious wave blocking circuit formed of a plural fundamental pattern | Yohei Ishikawa | 2003-01-07 |
| 6445255 | Planar dielectric integrated circuit | Yohei Ishikawa, Koichi Sakamoto, Sadao Yamashita | 2002-09-03 |
| 6414639 | Resonance device, and oscillator, filter, duplexer and communication device incorporating same | — | 2002-07-02 |
| 6411181 | Dielectric resonator, inductor, capacitor, dielectric filter, oscillator, and communication device | Yohei Ishikawa, Hiroaki Tanaka, Yutaka Ida | 2002-06-25 |
| 6388541 | Dielectric resonator having an electromagnetic wave absorbing member and apparatus incorporating the dielectric resonator | Toshiro Hiratsuka, Tomiya Sonoda | 2002-05-14 |
| 6388542 | Dielectric filter, transmission-reception sharing unit, and communication device | Toshiro Hiratsuka, Tomiya Sonoda | 2002-05-14 |
| 6369676 | High-frequency module | Koichi Sakamoto, Sadao Yamashita, Takatoshi Kato, Yasutaka Fujii, Toshiro Hiratsuka | 2002-04-09 |
| 6359536 | High frequency multi-layer module with electronic component receiving aperture and conductive via | Koichi Sakamoto, Sadao Yamashita, Yohei Ishikawa | 2002-03-19 |
| 6323740 | High-frequency circuit device and communication apparatus | Yohei Ishikawa, Takatoshi Kato, Koichi Sakamoto | 2001-11-27 |
| 6204739 | Dielectric resonant apparatus | Koichi Sakamoto, Takatoshi Kato, Sadao Yamashita | 2001-03-20 |
| 6201456 | Dielectric filter, dielectric duplexer, and communication device, with non-electrode coupling parts | Toshiro Hiratsuka, Tomiya Sonoda | 2001-03-13 |
| 6188360 | Radio-frequency radiation source, radio frequency radiation source array, antenna module, and radio equipment | Takatoshi Kato, Koichi Sakamoto, Yohei Ishikawa | 2001-02-13 |
| 6166614 | Nonradiative planar dielectric line and integrated circuit | Yohei Ishikawa, Koichi Sakamoto, Atsushi Saitoh | 2000-12-26 |
| 6163688 | Oscillator and communications device | Yasutaka Fujii, Koichi Sakamoto, Sadao Yamashita, Takehisa Kajikawa | 2000-12-19 |
| 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, Shigeyuki Mikami | 2000-09-19 |
| 6087912 | High frequency multi-layer module comprising a dielectric resonator | Koichi Sakamoto, Sadao Yamashita, Yohei Ishikawa | 2000-07-11 |