Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7659795 | Antenna duplexer and wireless terminal using the same | Nobuhiko Shibagaki, Shigeki Matsuda, Naoki Matsuura, Kazuyuki Yokoyama | 2010-02-09 |
| 7561010 | Piezoelectric thin film resonators | Nobuhiko Shibagaki, Atsushi Isobe, Kengo Asai, Hisanori Matsumoto | 2009-07-14 |
| 7499678 | Antenna sharing device and wireless communication terminal using the same | Nobuhiko Shibagaki, Kazuyuki Sakiyama, Osamu Hikino | 2009-03-03 |
| 7408287 | Film bulk acoustic wave resonator, film bulk acoustic wave resonator filter and method of manufacturing film bulk acoustic wave resonator | Hisanori Matsumoto, Kengo Asai, Atsushi Isobe | 2008-08-05 |
| 7385464 | Resonator type filter | Nobuhiko Shibagaki | 2008-06-10 |
| 7221242 | Bulk acoustic wave resonator and manufacturing method thereof, filter using the same, semiconductor integrated circuit device using the same, and high frequency module using the same | Kengo Asai, Hisanori Matsumoto, Atsushi Isobe | 2007-05-22 |
| 6766149 | Mobile radio terminal and surface acoustic wave antenna duplexer | Kazuyuki Sakiyama, Naoki Matsuura, Nobuhiko Shibagaki | 2004-07-20 |
| 6714099 | Radio frequency filter, radio frequency circuit, antenna duplexer and radio terminal | Nobuhiko Shibagaki, Naoki Matsuura, Kazuyuki Yokoyama, Shigeki Matsuda | 2004-03-30 |
| 6525624 | Band-switchable surface acoustic wave antenna duplexer and mobile radio terminal | Nobuhiko Shibagaki, Kazuyuki Sakiyama, Masato Kijima, Osamu Hikino | 2003-02-25 |
| 6346761 | Surface acoustic wave device capable of suppressing spurious response due to non-harmonic higher-order modes | Atsushi Isobe, Kengo Asai, Atsushi Sumioka | 2002-02-12 |
| 6047306 | CDMA communication RF signal processing apparatus using SAW | Chisaki Takubo, Nobuhiko Shibagaki, Kazuyuki Sakiyama | 2000-04-04 |
| 5814917 | Surface acoustic wave equipment | Atsushi Isobe, Chisaki Takubo, Kengo Asai | 1998-09-29 |
| 5666091 | Structure of surface acoustic wave filter | Kazuyuki Sakiyama, Nobuhiko Shibagaki | 1997-09-09 |
| 5604059 | Mask structure having phase shifting pattern suitable for forming fine pattern on photosensitive film and method of manufacturing solid-state devices using such mask structure | Ryo Imura, Yoshinori Hoshina, Kengo Asai, Atsushi Isobe, Ryo Suzuki +2 more | 1997-02-18 |
| 5438305 | High frequency module including a flexible substrate | Atsushi Sumioka, Takatoshi Akagi, Toyoji Tabuchi, Nobuhiko Shibagaki | 1995-08-01 |
| 5422615 | High frequency circuit device | Nobuhiko Shibagaki, Toyoji Tabuchi, Takatoshi Akagi, Satoshi Wakamori, Tomomi Matsumoto | 1995-06-06 |
| 5235234 | Surface acoustic wave device | Toyoji Tabuchi, Nobuhiko Shibagaki, Atsushi Isobe, Kazuhito Kurosawa | 1993-08-10 |
| 5202652 | Surface acoustic wave filter device formed on a plurality of piezoelectric substrates | Toyoji Tabuchi, Nobuhiko Shibagaki, Tetsuya Hirashima | 1993-04-13 |
| 5115216 | Surface acoustic wave filter including saw resonators with transmission spaces therein | Toyoji Tabuchi, Kazuhito Kurosawa, Nobuhiko Shibagaki | 1992-05-19 |
| 5087901 | Surface acoustic wave band-pass filter with different phase weighted transducers | Kazuhito Kurosawa, Toyoji Tabuchi, Nobuhiko Shibagaki, Tetsuya Hirashima | 1992-02-11 |
| 5065065 | Surface acoustic wave device | Toyoji Tabuchi, Nobuhiko Shibagaki, Atsushi Isobe, Kazuhito Kurosawa | 1991-11-12 |
| 5010269 | SAW resonator having a broad bandwidth | Atsushi Sumioka, Toyoji Tabuchi, Kazuhito Kurosawa, Tuneo Kinoshita | 1991-04-23 |
| 4906885 | Electrode material for surface acoustic wave devices and surface acoustic wave device using the same | Hiroomi Kojima, Toyoji Tabuchi, Kazuhito Kurosawa, Atsushi Sumioka | 1990-03-06 |
| 4803449 | Filter combining surface acoustic wave resonators | Yoichi Saigo, Kazuhito Kurosawa | 1989-02-07 |
| 4792939 | Duplex radio communication transceiver | Atsushi Sumioka, Yoshikatu Ishida, Kunihiro Hamada, Yutaka Chiba, Yoshio Abe | 1988-12-20 |