Issued Patents All Time
Showing 51–75 of 104 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6586786 | High frequency switch and mobile communication equipment | Shoichi Kitazawa, Masaharu Tanaka, Toru Yamada | 2003-07-01 |
| 6577205 | High-frequency filter device, filter device combined to a transmit-receive antenna, and wireless apparatus using the same | Toru Yamada | 2003-06-10 |
| 6570469 | Multilayer ceramic device including two ceramic layers with multilayer circuit patterns that can support semiconductor and saw chips | Toru Yamada, Kazuhide Uriu, Tsutomu Matsumura | 2003-05-27 |
| 6529096 | Dielectric filter, antenna duplexer, and communications appliance | Tomoya Maekawa, Hiroshi Kushitani, Hiroshi Shigemura, Toru Yamada, Hideaki Nakakubo | 2003-03-04 |
| 6515559 | In-band-flat-group-delay type dielectric filter and linearized amplifier using the same | Takehiko Yamakawa, Toru Yamada, Minoru Tachibana, Toshiaki Nakamura, Hiroyuki Nakamatsu | 2003-02-04 |
| 6510607 | Method for forming a dielectric laminated device | Hideaki Nakakubo, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2003-01-28 |
| 6456172 | Multilayered ceramic RF device | Toru Yamada, Hiroshi Kagata, Makoto Sakakura | 2002-09-24 |
| 6445266 | Multilayer filter having varied dielectric constant regions | Yoshitaka Nagatomi, Naoki Yuda, Shoichi Kitazawa, Toru Yamada | 2002-09-03 |
| 6414572 | Dielectric resonator having a frequency tuning member spirally engaged with the cavity | Yuki Satoh, Masami Hatanaka, Yuji Saka, Toshiaki Nakamura | 2002-07-02 |
| 6359531 | Multilayer filter with electrode patterns connected on different side surfaces to side electrodes and input/output electrodes | Yoshitaka Nagatomi, Naoki Yuda, Shoichi Kitazawa, Toru Yamada | 2002-03-19 |
| 6351196 | Surface acoustic wave filter and multistage surface acoustic wave filter | Hiroyuki Nakamura, Toru Yamada, Kazunori Nishimura | 2002-02-26 |
| 6348845 | Surface acoustic wave filter and multistage surface acoustic wave filter | Hiroyuki Nakamura, Toru Yamada, Kazunori Nishimura | 2002-02-19 |
| 6346866 | Dielectric laminated device and its manufacturing method | Hideaki Nakakubo, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2002-02-12 |
| 6340953 | Antenna device | Toshihiro Teraoka, Koichi Ogawa, Tomoya Maekawa | 2002-01-22 |
| 6326863 | Matching circuit chip, filter with matching circuit, duplexer and cellular phone | Hiroshi Kushitani, Toru Yamada, Naoki Yuda, Hideaki Nakakubo, Makoto Fujikawa | 2001-12-04 |
| 6310525 | Dielectric laminated device and its manufacturing method | Hideaki Nakakubo, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue, Shoichi Kitazawa | 2001-10-30 |
| 6304156 | Laminated dielectric antenna duplexer and a dielectric filter | Atsushi Sasaki, Yuki Satoh, Hiroshi Kushitani, Hideaki Nakakubo, Toshiaki Nakamura +2 more | 2001-10-16 |
| 6222431 | Balanced dielectric filter | Toru Yamada, Hideaki Nakakubo, Shoichi Kitazawa | 2001-04-24 |
| 6222429 | Dielectric resonator, dielectric notch filter, and dielectric filter with optimized resonator and cavity dimensions | Yuki Satoh, Masami Hatanaka, Yuji Saka, Toshiaki Nakamura | 2001-04-24 |
| 6184760 | Half-wavelength resonator type high frequency filter | Kouji Wada, Ikuo Awai | 2001-02-06 |
| 6177853 | Multilayer filter with electrode patterns connected on different side surfaces to side electrodes and input/output electrodes | Yoshitaka Nagatomi, Naoki Yuda, Shoichi Kitazawa, Toru Yamada | 2001-01-23 |
| 6166613 | Voltage-controlled resonator, method of fabricating the same, method of tuning the same, and mobile communication apparatus | Yoshihiro Nakagawa, Koichi Ogawa, Makoto Sakakura, Toshiaki Nakamura | 2000-12-26 |
| 6150903 | Piezoelectric filter, its manufacturing method, and intermediate frequency filter | Yasuteru Asakawa, Osamu Kawasaki, Toru Yamada | 2000-11-21 |
| 6147571 | Dual-band multilayer bandpass filter | Shoichi Kitazawa, Toru Yamada, Koichi Ogawa, Makoto Fujikawa, Tadanori Fujisawa +2 more | 2000-11-14 |
| 6140891 | Dielectric laminated filter | Hideaki Nakakubo, Toru Yamada, Shoichi Kitazawa, Hiroshi Kushitani | 2000-10-31 |