H04H 40/63
For separation improvements or adjustments
Official title: for separation improvements or adjustments
H04H40/63 (For separation improvements or adjustments) appears on 21 US grants and 12 published applications in this corpus.
Search patents in H04H- Granted patents
- 21
- Published applications
- 12
- Assignees
- 20
- Inventors
- 48
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 2 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 2 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Radio apparatus for a vehicle and a control method thereof22 Sep 2026US 12,744,609 B2Hyundai Motor Company
- Stereo reproduction apparatus6 Mar 2018US 9,913,060 B2Panasonic Intellectual Property Corporation of America
- Method for optimizing the stereo reception for an analog radio set and associated analog radio receiver13 Jan 2015US 8,934,635 B2Arkamys
- Stereo decoding system capable of reducing the phase shift during the signal transforming26 Oct 2010US 7,822,211 B2Mediatek Inc.
- Method for separating a RDS signal component and signal receiver13 Apr 2010US 7,697,910 B2Sony Deutschland GmbH
- Removal of spatial artifacts from audio12 Feb 2026US 2026/0046578 A1Google Inc.
- Radio apparatus for a vehicle and a control method thereof11 Dec 2025US 2025/0379674 A1Hyundai Motor Company
- Stereo reproduction apparatus12 Oct 2017US 2017/0295444 A1Panasonic Intellectual Property Corporation of America
- Method for optimizing the stereo reception for an analog radio set and associated analog radio receiver15 Nov 2012US 2012/0288098 A1Arkamys
- Fm radio receiving apparatus9 Aug 2012US 2012/0201387 A1
Most cited
By later US patents
- Radio receiver having an adaptive equalizer and method therefor67US 6,993,311 B2Freescale Semiconductor, Inc. · 2006
- Signal processing circuit60US 4,139,728 AVictor Company of Japan, Ltd. · 1979
- Sound multiplex receiver25US 4,703,501 APioneer Electronic Corporation · 1987
- FM Stereo demodulation circuit with voltage dividing and multiplexing techniques12US 4,404,430 ANippon Gakki Seizo Kabushiki Kaisha · 1983
- Signal quality measurement using full-complex FM detector10US 6,295,324 B1Visteon Global Technologies, Inc. · 2001