Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7109531 | High frequency switch, two-band type high frequency switch, three-band type high frequency switch, and mobile communication equipment | Masaharu Tanaka, Toshio Ishizaki, Toru Yamada | 2006-09-19 |
| 7054608 | Multilayer electronic component and communication apparatus and method | Takehiko Yamakawa, Toshio Ishizaki, Toru Yamada, Tomoyuki Iwasaki | 2006-05-30 |
| 6941650 | Method for manufacturing dielectric laminated device | Hideaki Nakakubo, Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue | 2005-09-13 |
| 6835968 | High frequency switch, two-band type high frequency switch, three-band type high frequency switch, and mobile communication equipment | Masaharu Tanaka, Toshio Ishizaki, Toru Yamada | 2004-12-28 |
| 6765460 | Dielectric laminated device including a buried electric conductive member to form a strip line and its method of manufacture | Hideaki Nakakubo, Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue | 2004-07-20 |
| 6603372 | Laminated notch filter and cellular phone using the same | Toshio Ishizaki, Ikuo Awai, Hideyuki Miyake, Toru Yamada | 2003-08-05 |
| 6586786 | High frequency switch and mobile communication equipment | Masaharu Tanaka, Toshio Ishizaki, Toru Yamada | 2003-07-01 |
| 6510607 | Method for forming a dielectric laminated device | Hideaki Nakakubo, Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue | 2003-01-28 |
| 6445266 | Multilayer filter having varied dielectric constant regions | Yoshitaka Nagatomi, Naoki Yuda, Toshio Ishizaki, Toru Yamada | 2002-09-03 |
| 6359531 | Multilayer filter with electrode patterns connected on different side surfaces to side electrodes and input/output electrodes | Yoshitaka Nagatomi, Naoki Yuda, Toshio Ishizaki, Toru Yamada | 2002-03-19 |
| 6346866 | Dielectric laminated device and its manufacturing method | Hideaki Nakakubo, Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue | 2002-02-12 |
| 6310525 | Dielectric laminated device and its manufacturing method | Hideaki Nakakubo, Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue | 2001-10-30 |
| 6222431 | Balanced dielectric filter | Toshio Ishizaki, Toru Yamada, Hideaki Nakakubo | 2001-04-24 |
| 6177853 | Multilayer filter with electrode patterns connected on different side surfaces to side electrodes and input/output electrodes | Yoshitaka Nagatomi, Naoki Yuda, Toshio Ishizaki, Toru Yamada | 2001-01-23 |
| 6147571 | Dual-band multilayer bandpass filter | Toru Yamada, Toshio Ishizaki, Koichi Ogawa, Makoto Fujikawa, Tadanori Fujisawa +2 more | 2000-11-14 |
| 6140891 | Dielectric laminated filter | Hideaki Nakakubo, Toshio Ishizaki, Toru Yamada, Hiroshi Kushitani | 2000-10-31 |
| 6020798 | Dielectric laminated device and its manufacturing method | Hideaki Nakakubo, Toshio Ishizaki, Toru Yamada, Hiroshi Kagata, Tatsuya Inoue | 2000-02-01 |