Issued Patents All Time
Showing 26–50 of 68 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5497131 | Strip line filter having dual mode loop resonators | Kazuaki Takahashi, Makoto Hasegawa, Munenori Fujimura | 1996-03-05 |
| 5479142 | Strip dual mode filter in which a resonance width of a microwave is adjusted and dual mode multistage filter in which the strip dual mode filters are arranged in series | Kazuaki Takahashi, Munenori Fujimura, Hiroyuki Yabuki | 1995-12-26 |
| 5446762 | Data demodulation circuit for FSK modulated RF signal receiver providing wide-band 90.degree. baseband phase shifting | Motoi Ohba, Makoto Hasegawa | 1995-08-29 |
| 5400416 | Optical modulation device with coupled line structure and method of driving the same | Akira Enokihara, Kentaro Setsune, Morikazu Sagawa | 1995-03-21 |
| 5400002 | Strip dual mode filter in which a resonance width of a microwave is adjusted and dual mode multistage filter in which the strip dual mode filters are arranged in series | Kazuaki Takahashi, Munenori Fujimura, Hiroyuki Yabuki | 1995-03-21 |
| 5369383 | Strip line filter having dual mode loop resonators | Kazuaki Takahashi, Makoto Hasegawa, Munenori Fujimura | 1994-11-29 |
| 5334961 | Strip-line type bandpass filter | Hirokazu Shirai, Morikazu Sagawa | 1994-08-02 |
| 5332978 | Frequency synthesizer | Hiroyuki Yabuki | 1994-07-26 |
| 5250910 | Push-push oscillator having in-phase and anti-phase output combining circuits | Hiroyuki Yabuki, Isao Ishigaki | 1993-10-05 |
| 5138284 | Push-push oscillator using a transmission line resonator and differential output | Hiroyuki Yabuki, Haruyoshi Endo, Morikazu Sagawa | 1992-08-11 |
| 5115515 | Method and apparatus for radio communication with improved automatic frequency control | Yuuri Yamamoto | 1992-05-19 |
| 5081650 | Data receiver | Makoto Hasegawa, Motoi Ohba | 1992-01-14 |
| 5055809 | Resonator and a filter including the same | Morikazu Sagawa, Haruyoshi Endo, Fumio Fukushima | 1991-10-08 |
| 5025229 | Voltage-controlled oscillator using a surface elastic wave resonator | Makoto Hasegawa, Kazuaki Takahashi, Masao Takahashi, Takayuki Shimazu | 1991-06-18 |
| 5008629 | Frequency synthesizer | Motoi Ohba, Hiroyuki Yabuki | 1991-04-16 |
| 4985690 | Dielectric stepped impedance resonator | Kazuhiro Eguchi, Eiichi Ochiai, Shinichiro Ito, Takehiko Yoneda, Hiromitsu Taki +4 more | 1991-01-15 |
| 4906945 | Millimeter-wave/submillimeter-wave oscillator | Koji Mizuno, Haruyoshi Endo | 1990-03-06 |
| 4876744 | Mixer with rat race circuit | Kouei Misaizu, Haruyoshi Endo | 1989-10-24 |
| 4864644 | VHF-UHF mixer having a balun | Kenichi Takahashi, Makoto Hasegawa | 1989-09-05 |
| 4841255 | Frequency synthesizer | Motoi Ohba | 1989-06-20 |
| 4812791 | Dielectric resonator for microwave band | Motoi Ohba | 1989-03-14 |
| 4791387 | Microwave band frequency synthesizer | Makoto Hasegawa, Kouei Misaizu | 1988-12-13 |
| 4758922 | High frequency circuit having a microstrip resonance element | Isao Ishigaki, Hiroyuki Yabuki | 1988-07-19 |
| 4749963 | Oscillator having stripline loop resonator | Isao Ishigaki, Morikazu Sagawa, Motoi Ohba | 1988-06-07 |
| 4679003 | Frequency divider circuit and frequency synthesizer using the same | Morikazu Sagawa, Yoshikazu Mori, Motoi Ohba, Sadahiko Yamashita | 1987-07-07 |