H04J 3/0667
Bidirectional timestamps
Official title: {Bidirectional timestamps, e.g. NTP or PTP for compensation of clock drift and for compensation of propagation delays (arrangements for monitoring round trip delays in packet switching networks H04L43/0864)}
H04J3/0667 (Bidirectional timestamps) appears on 1,436 US grants and 1,705 published applications in this corpus.
Search patents in H04J- Granted patents
- 1,436
- Published applications
- 1,705
- Assignees
- 542
- Inventors
- 2,790
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 9 |
| 2003 | 5 | 11 |
| 2004 | 1 | 13 |
| 2005 | 3 | 10 |
| 2006 | 10 | 16 |
| 2007 | 7 | 22 |
| 2008 | 12 | 22 |
| 2009 | 11 | 27 |
| 2010 | 22 | 47 |
| 2011 | 31 | 43 |
| 2012 | 36 | 58 |
| 2013 | 46 | 88 |
| 2014 | 67 | 82 |
| 2015 | 90 | 87 |
| 2016 | 93 | 73 |
| 2017 | 85 | 65 |
| 2018 | 76 | 69 |
| 2019 | 82 | 69 |
| 2020 | 72 | 110 |
| 2021 | 96 | 114 |
| 2022 | 108 | 131 |
| 2023 | 115 | 165 |
| 2024 | 125 | 155 |
| 2025 | 146 | 135 |
| 2026 | 80 | 84 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Communication apparatus, control method for communication apparatus, and storage medium29 Sep 2026US 12,750,147 B2Canon Kabushiki Kaisha
- Communication system with enhanced user datagram protocol support for precision time protocol29 Sep 2026US 12,750,148 B2Outdoor Wireless Networks LLC
- Apparatus and method for two-way delay error compensation in communication system29 Sep 2026US 12,750,149 B2Electronics and Telecommunications Research Institute
- Circuitry and method for quantization error correction for time synchronization22 Sep 2026US 12,743,122 B2Advanced Micro Devices, Inc.
- Precision time protocol link time error calibration using over-the-air synchronization22 Sep 2026US 12,745,200 B2Telefonaktiebolaget LM Ericsson (publ)
- Time synchronization techniques8 Oct 2026US 2026/0312711 A1Dell Products L. P.
- Small form-factor pluggable device8 Oct 2026US 2026/0312903 A1Schweitzer Engineering Laboratories, Inc.
- Secondary reference time validation1 Oct 2026US 2026/0303245 A1Nokia Solutions and Networks Oy
- Cross timestamping for pci express precision time measurement1 Oct 2026US 2026/0303246 A1Microchip Touch Solutions Limited
- Systems and methods for supporting phase adjustments over docsis1 Oct 2026US 2026/0303247 A1ARRIS Enterprises LLC
Most cited
By later US patents
- Distributed remote monitoring (dRMON) for networks500US 6,108,782 A3Com Corporation · 2000
- System and method for synchronizing time across a computer cluster404US 6,199,169 B1Compaq Computer Corporation · 2001
- Clock synchronization system and method using a continuous conversion function for a communication network344US 6,157,957 ACisco Technology, Inc. · 2000
- Hearing aid wireless network325US 7,778,432 B2GN ReSound A/S · 2010
- System and method for synchronizing time across a computer cluster306US 6,351,821 B1Compaq Computer Corporation · 2002