Issued Patents All Time
Showing 26–50 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6114911 | Power amplifier | Hiroshi Iwai, Kaoru Ishida, Takashi Enoki, Youichi Morinaga | 2000-09-05 |
| 6094564 | Mobile communication apparatus operable in different formats and pairing I-F band pass filter type with I-F amplifier characteristics | Wataru Tomiya, Seiichi Yamaguchi, Fujio Sasaki | 2000-07-25 |
| 6081694 | Mobile telephone transmitter with internal auxiliary matching circuit | Toru Matsuura, Kaoru Ishida, Youichi Morinaga | 2000-06-27 |
| 6054900 | Power amplifier MMIC and mobile communication terminal | Kaoru Ishida, Isao Nasuno, Kazuhiko Nakayama | 2000-04-25 |
| 6037837 | Feed forward amplifier | Masayuki Miyaji, Kaoru Ishida, Shin'ichi Kugou | 2000-03-14 |
| 6032032 | Mobile radio communication apparatus | Hidenobu Kato, Seiichi Yamaguchi, Fujio Sasaki | 2000-02-29 |
| 6006080 | Receiving mixer circuit for mobile radio transceiver designed to operate with multiple modulation modes and multiple frequency bands | Hidenobu Kato, Keiichi Nakayama, Seiichi Yamaguchi, Takashi Enoki, Manabu Yamaguchi +1 more | 1999-12-21 |
| 5987309 | Transceiver circuits for TDMA system with variable frequency second local oscillator | Hisashi Adachi, Youichi Morinaga, Toshio Obara | 1999-11-16 |
| 5986522 | Piezoelectric filter of the ladder type | Yasuteru Asakawa, Toshio Ishizaki, Tomoki Uwano, Osamu Kawasaki, Yukihiko Ise +1 more | 1999-11-16 |
| 5973557 | High efficiency linear power amplifier of plural frequency bands and high efficiency power amplifier | Masayuki Miyaji, Kaoru Ishida, Yoichi Morinaga, Hidenobu Kato, Takashi Enoki | 1999-10-26 |
| 5973579 | Ladder type intermediate frequency filter | Yasuteru Asakawa, Toshio Ishizaki, Toru Yamada | 1999-10-26 |
| 5966666 | Multiple-band mobile transceiver having a smaller number of local oscillators | Seiichi Yamaguchi, Fujio Sasaki | 1999-10-12 |
| 5926466 | Time division multiple access FDD wireless unit and time division multiple access FDD/TDD dual mode wireless unit | Kaoru Ishida, Fujio Sasaki, Yoichi Morinaga | 1999-07-20 |
| 5901345 | Transmitter of wireless system and high frequency power amplifier used therein | Hikaru Ikeda, Kaoru Ishida, Nobuo Fuse, Hideki Yagita, Hiroshi Haruki | 1999-05-04 |
| 5872487 | Fast frequency switching synthesizer | Hisashi Adachi, Tomoki Uwano, Takeshi Miura, Youichi Morinaga | 1999-02-16 |
| 5852384 | Dual band oscillator circuit using strip line resonators | Makoto Sakakura, Hisanaga Miyoshi, Kouji Hashimoto, Nobuo Fuse, Kaoru Ishida | 1998-12-22 |
| 5852784 | Multiband mobile unit communication apparatus | Fumio Ito, Seiichi Yamaguchi, Fujio Sasaki | 1998-12-22 |
| 5815036 | Apparatus and method for controlling feedforward amplifier | Yoshishige Yoshikawa, Hisashi Adachi, Kazuo Nagao | 1998-09-29 |
| 5770970 | Transmitter of wireless system and high frequency power amplifier used therein | Hikaru Ikeda, Kaoru Ishida, Nobuo Fuse, Hideki Yagita, Hiroshi Haruki | 1998-06-23 |
| 5694089 | Fast frequency switching synthesizer | Hisashi Adachi, Tomoki Uwano | 1997-12-02 |
| 5691668 | Feedforward amplifier | Yoshishige Yoshikawa, Hisashi Adachi, Kazuo Nagao, Shinichi Kugou | 1997-11-25 |
| 5594394 | Antenna diversity switching device with switching circuits between the receiver terminal and each antenna | Atsushi Sasaki, Toshio Ishizaki, Hiroshi Takahashi, Tooru Sakuragawa, Hideaki Nakakubo +4 more | 1997-01-14 |
| 5559474 | Frequency synthesizer with controllable loop filter | Takayuki Matsumoto, Hisashi Adachi, Makoto Sakakura | 1996-09-24 |
| 5442812 | Antenna switching apparatus for selectively connecting antenna to transmitter or receiver | Toshio Ishizaki, Hideaki Nakakubo, Kimio Aizawa, Shogo Iizuka | 1995-08-15 |
| 5371477 | Linear amplifier | Hikaru Ikeda, Toshio Ishizaki, Yoshishige Yoshikawa, Kunihiko Kanazawa | 1994-12-06 |