H04B 1/66
Details of transmission systems, not covered by a single one of groups
Official title: for reducing bandwidth of signals; for improving efficiency of transmission (H04B1/68 takes precedence)
H04B1/66 (Details of transmission systems, not covered by a single one of groups) appears on 998 US grants and 454 published applications in this corpus.
Search patents in H04B- Granted patents
- 998
- Published applications
- 454
- Assignees
- 308
- Inventors
- 1,139
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 6 | 0 |
| 1978 | 7 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 8 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 9 | 0 |
| 1985 | 6 | 0 |
| 1986 | 9 | 0 |
| 1987 | 12 | 0 |
| 1988 | 8 | 0 |
| 1989 | 20 | 0 |
| 1990 | 24 | 0 |
| 1991 | 10 | 0 |
| 1992 | 22 | 0 |
| 1993 | 22 | 0 |
| 1994 | 28 | 0 |
| 1995 | 27 | 0 |
| 1996 | 34 | 0 |
| 1997 | 62 | 0 |
| 1998 | 79 | 0 |
| 1999 | 48 | 0 |
| 2000 | 30 | 0 |
| 2001 | 19 | 15 |
| 2002 | 47 | 41 |
| 2003 | 35 | 40 |
| 2004 | 31 | 34 |
| 2005 | 18 | 24 |
| 2006 | 40 | 37 |
| 2007 | 27 | 39 |
| 2008 | 20 | 23 |
| 2009 | 17 | 14 |
| 2010 | 27 | 24 |
| 2011 | 30 | 7 |
| 2012 | 16 | 7 |
| 2013 | 12 | 13 |
| 2014 | 13 | 5 |
| 2015 | 13 | 8 |
| 2016 | 10 | 11 |
| 2017 | 13 | 10 |
| 2018 | 13 | 16 |
| 2019 | 19 | 16 |
| 2020 | 16 | 19 |
| 2021 | 10 | 11 |
| 2022 | 10 | 11 |
| 2023 | 11 | 9 |
| 2024 | 9 | 8 |
| 2025 | 9 | 8 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Configurable filter for asymmetrical radio frequency communication7 Jul 2026US 12,676,638 B2Skyworks Solutions, Inc.
- Methods and devices to control radiated spurious emission in RF antenna switches16 Jun 2026US 12,658,949 B2pSemi Corporation
- Wireless device transmission timing24 Feb 2026US 12,563,501 B2Comcast Cable Communications, LLC
- Manufacturing method of electronic device28 Oct 2025US 12,457,005 B2Innolux Corporation
- Transmit power control in multicarrier communications7 Oct 2025US 12,439,344 B2Comcast Cable Communications, LLC
- Sonic based configuration and enrollment8 Oct 2026US 2026/0312616 A1Hewlett-Packard Development Company, L. P.
- Signal processing of fragmented downlink carriers19 Feb 2026US 2026/0051906 A1Apple Inc.
- Mitigation of sounding interference in high frequency cellular systems12 Feb 2026US 2026/0045967 A1Rockwell Collins, Inc.
- Electronic device8 Jan 2026US 2026/0012221 A1Innolux Corporation
- Signal Transmission Power Adjustment in a Wireless Device18 Sep 2025US 2025/0294468 A1Comcast Cable Communications, LLC
Most cited
By later US patents
- Methods for surveying dissemination of proprietary empirical data1,132US 5,862,260 ADigimarc Corporation · 1999
- Computer system linked by using information in data objects1,131US 6,122,403 ADigimarc Corporation · 2000
- Embedded signalling739US 5,319,735 ABolt Beranek and Newman Inc. · 1994
- Network linking method using steganographically embedded data objects665US 5,841,978 ADigimarc Corporation · 1998
- Graphics processing system employing embedded code signals621US 5,768,426 ADigimarc Corporation · 1998