H04J 3/0635
Clock or time synchronisation in a network
Official title: {Clock or time synchronisation in a network (timer in protocols H04L69/28)}
H04J3/0635 (Clock or time synchronisation in a network) appears on 6,271 US grants and 5,832 published applications in this corpus.
Search patents in H04J- Granted patents
- 6,271
- Published applications
- 5,832
- Assignees
- 1,727
- Inventors
- 11,031
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 13 | 0 |
| 1986 | 12 | 0 |
| 1987 | 18 | 0 |
| 1988 | 14 | 0 |
| 1989 | 23 | 0 |
| 1990 | 23 | 0 |
| 1991 | 32 | 0 |
| 1992 | 25 | 0 |
| 1993 | 24 | 0 |
| 1994 | 32 | 0 |
| 1995 | 39 | 0 |
| 1996 | 71 | 0 |
| 1997 | 57 | 0 |
| 1998 | 99 | 0 |
| 1999 | 114 | 0 |
| 2000 | 90 | 0 |
| 2001 | 104 | 43 |
| 2002 | 95 | 164 |
| 2003 | 122 | 178 |
| 2004 | 124 | 200 |
| 2005 | 119 | 183 |
| 2006 | 195 | 171 |
| 2007 | 151 | 203 |
| 2008 | 156 | 207 |
| 2009 | 187 | 226 |
| 2010 | 202 | 265 |
| 2011 | 220 | 239 |
| 2012 | 252 | 230 |
| 2013 | 255 | 263 |
| 2014 | 308 | 248 |
| 2015 | 275 | 247 |
| 2016 | 267 | 286 |
| 2017 | 248 | 198 |
| 2018 | 264 | 216 |
| 2019 | 287 | 243 |
| 2020 | 247 | 271 |
| 2021 | 242 | 271 |
| 2022 | 273 | 281 |
| 2023 | 262 | 290 |
| 2024 | 256 | 304 |
| 2025 | 270 | 245 |
| 2026 | 147 | 160 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems and methods for synchronizing device clocks6 Oct 2026US 12,756,491 B2Bose Corporation
- System information block delivery in sidelink6 Oct 2026US 12,757,140 B2QUALCOMM Incorporated
- 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
- Communication method and apparatus8 Oct 2026US 2026/0312710 A1Huawei Technologies Co., Ltd.
- Time synchronization techniques8 Oct 2026US 2026/0312711 A1Dell Products L. P.
- Small form-factor pluggable device8 Oct 2026US 2026/0312903 A1Schweitzer Engineering Laboratories, Inc.
- Sensing-based clock synchronization8 Oct 2026US 2026/0313614 A1QUALCOMM Incorporated
- Secondary reference time validation1 Oct 2026US 2026/0303245 A1Nokia Solutions and Networks Oy
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
- Multimedia wired/wireless content synchronization system and method1,810US 6,631,410 B1Sharp Laboratories of America, Inc. · 2003
- 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
- Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant683US 5,991,308 ATerayon Communication Systems, Inc. · 1999
- Method for frequency division duplex communications526US 5,933,421 AAT&T Wireless Services, Inc. · 1999