H04B 3/147
Fixed equalisers
Official title: {fixed equalisers}
H04B3/147 (Fixed equalisers) appears on 5 US grants and 0 published applications in this corpus.
Search patents in H04B- Granted patents
- 5
- Published applications
- 0
- Assignees
- 3
- Inventors
- 3
- Latest grant
- 16 Aug 1988
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Circuit and method for correcting distortion in a digital audio system16 Aug 1988US 4,764,938 AMeyer Sound Laboratories, Incorporated
- Linear phase filter with self-equalized group delay26 Jul 1983US 4,395,688 AHarris Corporation
- Split phase delay equalizer with reduced insertion loss26 Oct 1982US 4,356,460 ARockwell International Corporation
- Split phase delay equalizer with single transformer and adjustment for Q loss28 Sep 1982US 4,352,075 ARockwell International Corporation
- Split phase delay equalizer with stray reactance compensation17 Aug 1982US 4,345,222 ARockwell International Corporation
No published applications in this class yet.
Most cited
By later US patents
- Linear phase filter with self-equalized group delay25US 4,395,688 AHarris Corporation · 1983
- Circuit and method for correcting distortion in a digital audio system4US 4,764,938 AMeyer Sound Laboratories, Incorporated · 1988
- Split phase delay equalizer with single transformer and adjustment for Q loss2US 4,352,075 ARockwell International Corporation · 1982
- Split phase delay equalizer with stray reactance compensation1US 4,345,222 ARockwell International Corporation · 1982
- Split phase delay equalizer with reduced insertion loss1US 4,356,460 ARockwell International Corporation · 1982