Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8451073 | Laminated RF device with vertical resonators having stack arrangement of laminated layers including dielectric layers | Michael Hoeft, Toshio Ishizaki | 2013-05-28 |
| 7904030 | High frequency switch, radio communication apparatus, and high frequency switching method | Kazuhide Uriu, Toru Yamada, Masaharu Tanaka | 2011-03-08 |
| 7123884 | RF switch | Tomoyuki Iwasaki | 2006-10-17 |
| 7116188 | Laminated dielectric filter, and antenna duplexer and communication equipment using the same | Emiko Kawahara, Toru Yamada, Hiroshi Kushitani | 2006-10-03 |
| 7027777 | High frequency switch and high frequency radio communication apparatus | Kazuhide Uriu, Toshio Ishizaki, Toru Yamada | 2006-04-11 |
| 6941650 | Method for manufacturing dielectric laminated device | Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2005-09-13 |
| 6847829 | Multiband high-frequency switch | Masaharu Tanaka, Yasushi Nagata | 2005-01-25 |
| 6788164 | Complex high frequency components | Tomoya Maekawa, Hiroshi Shigemura, Emiko Kawahara, Toru Yamada | 2004-09-07 |
| 6765460 | Dielectric laminated device including a buried electric conductive member to form a strip line and its method of manufacture | Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2004-07-20 |
| 6747528 | Dielectric filter, antenna duplexer, and communications appliance | Tomoya Maekawa, Hiroshi Kushitani, Hiroshi Shigemura, Toru Yamada, Toshio Ishizaki | 2004-06-08 |
| 6696903 | Laminated dielectric filter, and antenna duplexer and communication equipment using the same | Emiko Kawahara, Toru Yamada, Hiroshi Kushitani | 2004-02-24 |
| 6608533 | Matching circuit chip, filter with matching circuit, duplexer and cellular phone | Hiroshi Kushitani, Toru Yamada, Naoki Yuda, Toshio Ishizaki, Makoto Fujikawa | 2003-08-19 |
| 6608534 | Matching circuit chip, filter with matching circuit, duplexer and cellular phone | Hiroshi Kushitani, Toru Yamada, Naoki Yuda, Toshio Ishizaki, Makoto Fujikawa | 2003-08-19 |
| 6529096 | Dielectric filter, antenna duplexer, and communications appliance | Tomoya Maekawa, Hiroshi Kushitani, Hiroshi Shigemura, Toru Yamada, Toshio Ishizaki | 2003-03-04 |
| 6510607 | Method for forming a dielectric laminated device | Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2003-01-28 |
| 6346866 | Dielectric laminated device and its manufacturing method | Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2002-02-12 |
| 6326863 | Matching circuit chip, filter with matching circuit, duplexer and cellular phone | Hiroshi Kushitani, Toru Yamada, Naoki Yuda, Toshio Ishizaki, Makoto Fujikawa | 2001-12-04 |
| 6310525 | Dielectric laminated device and its manufacturing method | Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2001-10-30 |
| 6304156 | Laminated dielectric antenna duplexer and a dielectric filter | Toshio Ishizaki, Atsushi Sasaki, Yuki Satoh, Hiroshi Kushitani, Toshiaki Nakamura +2 more | 2001-10-16 |
| 6222431 | Balanced dielectric filter | Toshio Ishizaki, Toru Yamada, Shoichi Kitazawa | 2001-04-24 |
| 6140891 | Dielectric laminated filter | Toshio Ishizaki, Toru Yamada, Shoichi Kitazawa, Hiroshi Kushitani | 2000-10-31 |
| 6020798 | Dielectric laminated device and its manufacturing method | Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2000-02-01 |
| 6020799 | Laminated dielectric antenna duplexer and a dielectric filter | Toshio Ishizaki, Atsushi Sasaki, Yuki Satoh, Hiroshi Kushitani, Toshiaki Nakamura +2 more | 2000-02-01 |
| 5719539 | Dielectric filter with multiple resonators | Toshio Ishizaki, Atsushi Sasaki, Yuki Satoh, Hiroshi Kushitani, Toshiaki Nakamura +2 more | 1998-02-17 |
| 5654681 | Laminated dielectric resonator and dielectric filter | Toshio Ishizaki | 1997-08-05 |