Issued Patents All Time
Showing 26–48 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6850779 | Mobile communication antenna and mobile communication apparatus using it | Akihiko Iguchi, Susumu Fukushima, Naoki Yuda | 2005-02-01 |
| 6781553 | Antenna device and radio communication device comprising the same | Akihiko Iguchi, Susumu Fukushima | 2004-08-24 |
| 6759924 | Multi-frequency antenna duplexer | Toru Sakuragawa, Kozo Murakami, Ryoichi Takayama | 2004-07-06 |
| 6759925 | Radio-frequency hybrid switch module | Tetsuya Tsurunari, Kozo Murakami, Yoshiharu Omori, Masaaki Hayama | 2004-07-06 |
| 6628241 | Antenna device and communication terminal comprising the same | Susumu Fukushima | 2003-09-30 |
| 6476614 | Detector for detecting frequencies in more than one band | Koji Hashimoto, Hiroshi Takahashi | 2002-11-05 |
| 6445261 | Saw filter antenna sharing device using the same, and mobile communication terminal using the same | Naoki Yuda, Toru Sakuragawa, Ryouichi Takayama, Kozo Murakami | 2002-09-03 |
| 6414572 | Dielectric resonator having a frequency tuning member spirally engaged with the cavity | Masami Hatanaka, Toshio Ishizaki, Yuji Saka, Toshiaki Nakamura | 2002-07-02 |
| 6404302 | Surface acoustic wave filter utilizing a transmission line with phase characteristics that increase filter out of band attenuation | Toru Sakuragawa, Kozo Murakami | 2002-06-11 |
| 6335663 | Multiplexer/branching filter | Naoki Yuda, Hidenori Katsumura, Tsutomu Matsumura | 2002-01-01 |
| 6310422 | Surface acoustic wave filter | Toru Sakuragawa, Mitsuhiro Furukawa, Ryouichi Takayama | 2001-10-30 |
| 6304156 | Laminated dielectric antenna duplexer and a dielectric filter | Toshio Ishizaki, Atsushi Sasaki, Hiroshi Kushitani, Hideaki Nakakubo, Toshiaki Nakamura +2 more | 2001-10-16 |
| 6222429 | Dielectric resonator, dielectric notch filter, and dielectric filter with optimized resonator and cavity dimensions | Masami Hatanaka, Toshio Ishizaki, Yuji Saka, Toshiaki Nakamura | 2001-04-24 |
| 6107900 | Dielectric resonator having a through hole mounting structure | Masami Hatanaka, Toshio Ishizaki, Yuji Saka, Toshiaki Nakamura | 2000-08-22 |
| 6020799 | Laminated dielectric antenna duplexer and a dielectric filter | Toshio Ishizaki, Atsushi Sasaki, Hiroshi Kushitani, Hideaki Nakakubo, Toshiaki Nakamura +2 more | 2000-02-01 |
| 5949294 | Reference frequency source oscillator formed from first and second containers | Shuji Kondo, Mitsuo Suzuki, Akio Kimura | 1999-09-07 |
| 5847489 | Piezoelectric device and a package | Toshio Ishizaki, Tsuyoshi Sakaue, Koji Hashimoto, Tohru Yamada, Tomoki Uwano | 1998-12-08 |
| 5719539 | Dielectric filter with multiple resonators | Toshio Ishizaki, Atsushi Sasaki, Hiroshi Kushitani, Hideaki Nakakubo, Toshiaki Nakamura +2 more | 1998-02-17 |
| 5714919 | Dielectric notch resonator and filter having preadjusted degree of coupling | Masami Hatanaka, Toshio Ishizaki, Yuji Saka, Toshiaki Nakamura | 1998-02-03 |
| 5592010 | Semiconductor device | Masakazu Kakumu, Kazutaka Nogami | 1997-01-07 |
| 5589724 | Piezoelectric device and a package | Toshio Ishizaki, Tsuyoshi Sakaue, Koji Hashimoto, Tohru Yamada, Tomoki Uwano | 1996-12-31 |
| 5473289 | Temperature compensated crystal oscillator | Toshio Ishizaki, Koji Hashimoto | 1995-12-05 |
| 5319324 | Method of direct bonding of crystals and crystal devices | Koji Hashimoto, Toshio Ishizaki | 1994-06-07 |