Issued Patents All Time
Showing 26–39 of 39 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4449106 | Noise reducing apparatus | Yutaka Haramoto, Kaoru Totsuka | 1984-05-15 |
| 4442546 | Noise reduction by integrating frequency-split signals with different time constants | — | 1984-04-10 |
| 4430754 | Noise reducing apparatus | — | 1984-02-07 |
| 4412097 | Variable-directivity microphone device | Kaoru Totsuka, Makoto Yamamoto, Naotaka Miyaji | 1983-10-25 |
| 4399327 | Variable directional microphone system | Makoto Yamamoto, Naotaka Miyaji, Kaoru Totsuka | 1983-08-16 |
| 4363006 | Noise reduction system having series connected variable frequency filters | Yutaka Haramoto | 1982-12-07 |
| 4363007 | Noise reduction system having series connected low and high frequency emphasis and de-emphasis filters | Yutaka Haramoto, Kaoru Totsuka, Takao Kawasaki | 1982-12-07 |
| 4354059 | Variable-directivity microphone device | Kaoru Totsuka, Makoto Yamamoto, Naotaka Miyaji | 1982-10-12 |
| 4347510 | Apparatus for automatic selective switching and transmission of input signals | Hideaki Ozaki | 1982-08-31 |
| 4266296 | Multipath distortion compensation circuit and method | — | 1981-05-05 |
| 4246541 | System for removing interference distortion in the demodulated signal of a frequency-modulated signal | — | 1981-01-20 |
| 4211979 | Circuit arrangement for eliminating waveform distortion of an angle-modulated signal transmitted over multipaths | Teruo Muraoka, Masami Yamazaki | 1980-07-08 |
| 4204091 | Cancellation of interference distortions caused by intermodulation between FM signals on adjacent channels | Teruo Muraoka | 1980-05-20 |
| 4198609 | Phase tracked loop frequency demodulator | Teruo Muraoka, Masaki Hagihara, Takeo Nasu, Kunihiro Kato | 1980-04-15 |