G04R 20/04
Tuning or receiving
Official title: Tuning or receiving; Circuits therefor
G04R20/04 (Tuning or receiving) appears on 191 US grants and 201 published applications in this corpus.
Search patents in G04R- Granted patents
- 191
- Published applications
- 201
- Assignees
- 47
- Inventors
- 165
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 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 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 2 |
| 2004 | 0 | 1 |
| 2005 | 2 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 3 |
| 2008 | 0 | 2 |
| 2009 | 3 | 13 |
| 2010 | 6 | 6 |
| 2011 | 10 | 6 |
| 2012 | 5 | 11 |
| 2013 | 12 | 11 |
| 2014 | 10 | 18 |
| 2015 | 21 | 27 |
| 2016 | 23 | 22 |
| 2017 | 20 | 14 |
| 2018 | 11 | 15 |
| 2019 | 8 | 10 |
| 2020 | 11 | 10 |
| 2021 | 7 | 7 |
| 2022 | 8 | 5 |
| 2023 | 12 | 5 |
| 2024 | 3 | 6 |
| 2025 | 7 | 4 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Auxiliary precision timekeeper for GPS receiver15 Sep 2026US 12,736,926 B2BAE Systems Information and Electronic Systems Integration Inc.
- Systems and methods for hyper-precise time operations28 Jul 2026US 12,696,228 B2Verizon Patent and Licensing Inc.
- Electronic timepiece, storage medium storing program, and time correction method16 Jun 2026US 12,656,741 B2Casio Computer Co., Ltd.
- Satellite radio wave receiving device, electronic watch, method for controlling acquisition of date and time information, and program for the same12 May 2026US 12,625,473 B2Casio Computer Co., Ltd.
- GNSS time synchronization in redundant systems6 Jan 2026US 12,517,473 B2Waymo LLC
- Electronic timepiece, storage medium storing program, and time correction method17 Sep 2026US 2026/0277165 A1Casio Computer Co., Ltd.
- GNSS Time Synchronization in Redundant Systems30 Apr 2026US 2026/0118833 A1Waymo LLC
- Communication systems and methods for synchronizing clock timing and frequency6 Nov 2025US 2025/0344173 A1Hughes Network Systems, LLC
- Gnss/ins navigation assurance using chip-scale atomic clock2 Oct 2025US 2025/0306213 A1Honeywell International Inc.
- Auxiliary precision timekeeper for gps receiver21 Aug 2025US 2025/0264848 A1BAE Systems Information and Electronic Systems Integration Inc.
Most cited
By later US patents
- GPS receiver using a radio signal for improving time to first fix216US 5,663,735 ATrimble Navigation Limited · 1997
- Method and apparatus for determining time in a satellite positioning system195US 6,597,311 B2SnapTrack, Inc. · 2003
- Method and apparatus for determining time in a satellite positioning system145US 6,839,021 B2QUALCOMM Incorporated · 2005
- Method and apparatus for determining time in a satellite positioning system125US 6,215,442 B1SnapTrack, Inc. · 2001
- Low power GPS receiver system and method of using same123US 6,212,133 B12001