Issued Patents All Time
Showing 51–62 of 62 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5781588 | FSK signal receiver | Katsuaki Abe, Takaaki Kishigami, Makoto Hasegawa, Katsushi Yokozaki, Yoichi Yamaki +2 more | 1998-07-14 |
| 5777693 | Diversity receiving apparatus for a mobile unit | Takaaki Kishigami, Makoto Hasegawa, Tadaaki Ushiyama, Masahiko Nakamura, Yoshinori Takagi | 1998-07-07 |
| 5640428 | Direct conversion receiver | Katsuaki Abe, Makoto Hasegawa, Kazunori Watanabe, Katsushi Yokozaki | 1997-06-17 |
| 5633898 | Automatic frequency control apparatus for FSK receiver and FSK receiver including the same | Takaaki Kishigami, Katsuaki Abe, Makoto Hasegawa, Katsushi Yokozaki | 1997-05-27 |
| 5617451 | Direct-conversion receiver for digital-modulation signal with signal strength detection | Makoto Hasegawa, Katsushi Yokozaki, Hiroyuki Harada, Takaaki Kishigami, Yasunari Tanaka | 1997-04-01 |
| 5606574 | Mobile unit identifying system and method of demodulating for the same | Makoto Hasegawa, Hirohide Hirabayashi, Naoki Adachi, Yasuaki Namura, Hideko Sakai | 1997-02-25 |
| 5548619 | Radio receiver apparatus of orthogonal detection type comprising local oscillator means with improved automatic frequency control arrangement | Yoshio Horiike, Yasuo Yoshimura, Yoshiyuki Yokoajiro, Terue Matsumura, Makoto Hasegawa | 1996-08-20 |
| 5533045 | Automatic vehicle identification system, interrogator and responder included in the same | Makoto Hasegawa, Naoki Adachi, Hirohide Hirabayashi, Hideko Sakai | 1996-07-02 |
| 5450032 | FSK data demodulator using mixing of quadrature baseband signals | Makoto Hasegawa, Katsushi Yokozaki, Hiroyuki Harada | 1995-09-12 |
| 5414736 | FSK data receiving system | Makoto Hasegawa, Kazuaki Takahashi, Kazunori Watanabe, Katsushi Yokozaki, Hiroyuki Harada | 1995-05-09 |
| 5309113 | FSK data demodulator | Makoto Hasegawa, Kazunori Watanabe, Hiroyuki Harada | 1994-05-03 |
| 5293408 | FSK data receiving system | Kazuaki Takahashi, Makoto Hasegawa, Katsushi Yokozaki, Yasumi Imagawa, Hiroyuki Harada +1 more | 1994-03-08 |