Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7138890 | Surface acoustic wave (SAW) resonator SAW filter and SAW antenna duplexer using the SAW resonator | Hiroyuki Nakamura, Shunichi Seki, Kazunori Nishimura | 2006-11-21 |
| 7106150 | Surface acoustic wave filter | Koji Seo, Tetsuro Shimamura, Hiroshi Kushanti, Yuki Satoh | 2006-09-12 |
| 7034634 | Surface acoustic wave (SAW) resonator, SAW filter and SAW antenna duplexer using the SAW resonator | Hiroyuki Nakamura, Shunichi Seki, Kazunori Nishimura | 2006-04-25 |
| 6909341 | Surface acoustic wave filter utilizing a layer for preventing grain boundary diffusion | Ryoichi Takayama, Hidekazu Nakanishi, Tetsuo Kawasaki, Yasuhiko Yokota | 2005-06-21 |
| 6891449 | Antenna duplexer | Ryoichi Takayama, Tetsuo Kawasaki, Yuki Satoh, Kozo Murakami | 2005-05-10 |
| 6759924 | Multi-frequency antenna duplexer | Yuki Satoh, Kozo Murakami, Ryoichi Takayama | 2004-07-06 |
| 6714098 | SAW antenna duplexer having a phase shifter with less than 50 ohm characteristic impedance | Kazushi Nishida, Katsuya Fujii, Ichiro Kameyama, Hiroshi Fujinaka | 2004-03-30 |
| 6472953 | Band switching filter using a surface acoustic wave resonator and an antenna duplexer using the same | Yuki Sato, Katsuya Fujii, Kozo Murakami, Ryoichi Takayama | 2002-10-29 |
| 6445261 | Saw filter antenna sharing device using the same, and mobile communication terminal using the same | Naoki Yuda, Ryouichi Takayama, Kozo Murakami, Yuki Satoh | 2002-09-03 |
| 6404302 | Surface acoustic wave filter utilizing a transmission line with phase characteristics that increase filter out of band attenuation | Yuki Satoh, Kozo Murakami | 2002-06-11 |
| 6310422 | Surface acoustic wave filter | Yuki Satoh, Mitsuhiro Furukawa, Ryouichi Takayama | 2001-10-30 |
| 6297580 | Surface acoustic wave device and production method thereof and mobile communication equipment using it | Ryouichi Takayama, Mitsuhiro Furukawa, Yuji Murashima, Koji Nomura | 2001-10-02 |
| 5907265 | High-frequency circuit board trace crossing and electronic component therefor | Naoki Yuda, Kimio Aizawa, Ikuo Ota, Hideki Nanba | 1999-05-25 |