H04J 3/0664
Unidirectional timestamps
Official title: {unidirectional timestamps}
H04J3/0664 (Unidirectional timestamps) appears on 549 US grants and 525 published applications in this corpus.
Search patents in H04J- Granted patents
- 549
- Published applications
- 525
- Assignees
- 286
- Inventors
- 955
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 2 |
| 2002 | 3 | 10 |
| 2003 | 8 | 12 |
| 2004 | 8 | 21 |
| 2005 | 7 | 13 |
| 2006 | 14 | 31 |
| 2007 | 11 | 19 |
| 2008 | 16 | 21 |
| 2009 | 23 | 16 |
| 2010 | 23 | 31 |
| 2011 | 27 | 22 |
| 2012 | 23 | 29 |
| 2013 | 23 | 35 |
| 2014 | 34 | 20 |
| 2015 | 33 | 25 |
| 2016 | 18 | 27 |
| 2017 | 39 | 14 |
| 2018 | 25 | 28 |
| 2019 | 28 | 28 |
| 2020 | 35 | 30 |
| 2021 | 29 | 18 |
| 2022 | 27 | 17 |
| 2023 | 23 | 24 |
| 2024 | 14 | 19 |
| 2025 | 17 | 6 |
| 2026 | 7 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Validating synchronized local times of at least a first and a second control unit2 Jun 2026US 12,647,194 B2Bayerische Motoren Werke Aktiengesellschaft
- Clock synchronization between networked devices based on packet congestion information12 May 2026US 12,627,460 B2Mellanox Technologies, Ltd.
- Validation of time synchronization31 Mar 2026US 12,592,874 B2Bayerische Motoren Werke Aktiengesellschaft
- Method of synchronizing a main slave clock with a main master clock24 Mar 2026US 12,587,297 B2Devialet
- Transvascular diaphragm pacing systems and methods of use10 Mar 2026US 12,569,681 B2Lungpacer Medical Inc.
- Communication method and apparatus8 Oct 2026US 2026/0312710 A1Huawei Technologies Co., Ltd.
- Clock synchronization between networked devices based on packet congestion information30 Jul 2026US 2026/0222171 A1Mellanox Technologies, Ltd.
- Adaptive One Way Time Transfer Method of Precision Time Synchronization18 Jun 2026US 2026/0172133 A1Riverside Research Institute
- Clock Synchronization Between Access Networks Through Core Network28 May 2026US 2026/0149521 A1
- Providing a Multi-Channel and a Multi-Zone Audio Environment30 Apr 2026US 2026/0122436 A1Sonos, Inc.
Most cited
By later US patents
- System and method for synchronizing operations among a plurality of independently clocked digital data processing devices1,949US 8,234,395 B2Sonos, Inc. · 2012
- System for synchronizing a plurality of nodes to concurrently generate output signals by adjusting relative timelags based on a maximum estimated timelag1,773US 5,923,902 AYamaha Corporation · 1999
- Method and apparatus for removing jitter and correcting timestamps in a packet stream358US 5,640,388 AScientific-Atlanta, Inc. · 1997
- Technique for synchronizing clocks in a network278US 7,043,651 B2Nortel Networks Limited · 2006
- Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices without a voltage controlled crystal oscillator262US 8,370,678 B2Sonos, Inc. · 2013