H04L 12/00
Data switching networks
Official title: Data switching networks (interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units G06F13/00)
H04L12/00 (Data switching networks) appears on 81,731 US grants and 83,623 published applications in this corpus.
Search patents in H04L- Granted patents
- 81,731
- Published applications
- 83,623
- Assignees
- 12,319
- Inventors
- 115,527
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 30 | 0 |
| 1977 | 43 | 0 |
| 1978 | 24 | 0 |
| 1979 | 24 | 0 |
| 1980 | 40 | 0 |
| 1981 | 42 | 0 |
| 1982 | 50 | 0 |
| 1983 | 58 | 0 |
| 1984 | 83 | 0 |
| 1985 | 154 | 0 |
| 1986 | 139 | 0 |
| 1987 | 195 | 0 |
| 1988 | 181 | 0 |
| 1989 | 201 | 0 |
| 1990 | 189 | 0 |
| 1991 | 191 | 0 |
| 1992 | 232 | 0 |
| 1993 | 272 | 0 |
| 1994 | 423 | 0 |
| 1995 | 532 | 0 |
| 1996 | 678 | 0 |
| 1997 | 602 | 0 |
| 1998 | 985 | 0 |
| 1999 | 1080 | 0 |
| 2000 | 1189 | 0 |
| 2001 | 1218 | 581 |
| 2002 | 1302 | 2159 |
| 2003 | 1435 | 2273 |
| 2004 | 1501 | 2365 |
| 2005 | 1388 | 2736 |
| 2006 | 1933 | 2797 |
| 2007 | 1536 | 3016 |
| 2008 | 1800 | 3246 |
| 2009 | 1978 | 3023 |
| 2010 | 2778 | 3190 |
| 2011 | 2745 | 2932 |
| 2012 | 2983 | 3385 |
| 2013 | 3159 | 3600 |
| 2014 | 3968 | 3843 |
| 2015 | 3941 | 4367 |
| 2016 | 3982 | 4537 |
| 2017 | 4019 | 4277 |
| 2018 | 3932 | 4159 |
| 2019 | 4551 | 4234 |
| 2020 | 4513 | 4403 |
| 2021 | 4144 | 3988 |
| 2022 | 3871 | 3855 |
| 2023 | 3795 | 3584 |
| 2024 | 3366 | 3091 |
| 2025 | 2751 | 2390 |
| 2026 | 1505 | 1592 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 12/28Data switching networks: characterised by path configuration43,027
- H04L 12/02Details27,063
- H04L 12/54Store-and-forward switching systems9,801
- H04L 12/66Arrangements for connecting between networks having differing types of switching systems6,334
- H04L 12/64Hybrid switching systems4,079
- H04L 12/50Circuit switching systems, i.e. systems in which the path is physically permanent244
Recent patents
- Controller area network (CAN) bus system using CANsec security protocol6 Oct 2026US 12,754,874 B2Robert Bosch GmbH
- System, method, and application for exchanging content in a social network environment6 Oct 2026US 12,755,256 B2Adeia Media Holdings LLC
- Subscriber station for a serial bus system, and method for communication with differential signals in a serial bus system6 Oct 2026US 12,756,420 B2Robert Bosch GmbH
- RF outlet power test device6 Oct 2026US 12,756,484 B1VeEX Inc.
- Data transmission device on server, data transmission method and program on server6 Oct 2026US 12,756,584 B2NTT, Inc.
- System for detecting circuit anomalies in trailer wiring8 Oct 2026US 2026/0309762 A1Grote Industries, Inc.
- Household appliances sensor update management8 Oct 2026US 2026/0310438 A1Haier US Appliance Solutions, Inc.
- Systems and methods for updating energy storage management software in embedded systems8 Oct 2026US 2026/0310442 A1Electra Vehicles, Inc.
- Method to detect data communication lock-up in an uart communication8 Oct 2026US 2026/0310618 A1Microchip Technology Incorporated
- Speech translation using latency based filler generation8 Oct 2026US 2026/0311681 A1Cisco Technology, Inc.
Most cited
By later US patents
- System for allowing all remote computers to perform annotation on an image and replicating the annotated image on the respective displays of other comuters2,385US 5,608,872 ANCR Corporation · 1997
- Instant sharing of documents on a remote server2,347US 6,654,032 B1WebEx Communications, Inc. · 2003
- Method and apparatus for determining behavioral profile of a computer user2,336US 5,848,396 AFreedom of Information, Inc. · 1998
- System for allowing user of any computer to draw image over that generated by the host computer and replicating the drawn image to other computers2,300US 5,649,104 ANCR Corporation · 1997
- Remote collaboration system including first program means translating user inputs into annotations and running on all computers while second program means runs on one computer2,250US 5,761,419 ANCR Corporation · 1998