H04L 12/40
Bus networks
H04L12/40 (Bus networks) appears on 10,937 US grants and 10,582 published applications in this corpus.
Search patents in H04L- Granted patents
- 10,937
- Published applications
- 10,582
- Assignees
- 2,921
- Inventors
- 19,312
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 12 | 0 |
| 1981 | 9 | 0 |
| 1982 | 15 | 0 |
| 1983 | 25 | 0 |
| 1984 | 23 | 0 |
| 1985 | 54 | 0 |
| 1986 | 52 | 0 |
| 1987 | 71 | 0 |
| 1988 | 58 | 0 |
| 1989 | 52 | 0 |
| 1990 | 54 | 0 |
| 1991 | 42 | 0 |
| 1992 | 53 | 0 |
| 1993 | 45 | 0 |
| 1994 | 75 | 0 |
| 1995 | 99 | 0 |
| 1996 | 107 | 0 |
| 1997 | 97 | 0 |
| 1998 | 170 | 0 |
| 1999 | 149 | 0 |
| 2000 | 154 | 0 |
| 2001 | 162 | 76 |
| 2002 | 188 | 252 |
| 2003 | 216 | 279 |
| 2004 | 228 | 268 |
| 2005 | 202 | 282 |
| 2006 | 238 | 284 |
| 2007 | 179 | 264 |
| 2008 | 209 | 308 |
| 2009 | 195 | 364 |
| 2010 | 331 | 410 |
| 2011 | 305 | 362 |
| 2012 | 348 | 362 |
| 2013 | 332 | 350 |
| 2014 | 425 | 371 |
| 2015 | 395 | 398 |
| 2016 | 368 | 436 |
| 2017 | 399 | 488 |
| 2018 | 428 | 580 |
| 2019 | 561 | 600 |
| 2020 | 606 | 751 |
| 2021 | 616 | 742 |
| 2022 | 650 | 667 |
| 2023 | 653 | 531 |
| 2024 | 552 | 448 |
| 2025 | 452 | 418 |
| 2026 | 261 | 291 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 12/40006Architecture of a communication node3,548
- H04L 12/407With decentralised control2,684
- H04L 2012/40267Bus for use in transportation systemsIndexing code2,569
- H04L 2012/40208Characterized by the use of a particular bus standardIndexing code2,422
- H04L 12/403With centralised control1,791
- H04L 12/40052High-speed ieee 1394 serial bus1,501
- H04L 12/40169Flexible bus arrangements1,152
- H04L 12/40143Involving priority mechanisms565
Recent patents
- Controller area network (CAN) bus system using CANsec security protocol6 Oct 2026US 12,754,874 B2Robert Bosch GmbH
- 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
- Communication receiver6 Oct 2026US 12,756,591 B2Denso Corporation
- Communication system for agricultural machine and method of manufacturing an agricultural machine29 Sep 2026US 12,745,687 B2Horsch Maschinen GmbH
- Security terminal system capable of performing high-speed security processing29 Sep 2026US 12,750,253 B2RANIX. Inc.
- System for detecting circuit anomalies in trailer wiring8 Oct 2026US 2026/0309762 A1Grote Industries, 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
- Communication device and communication system8 Oct 2026US 2026/0312399 A1Denso Corporation
- Semiconductor device and method for driving the same8 Oct 2026US 2026/0312932 A1Renesas Electronics Corporation
Most cited
By later US patents
- Reference time distribution over a network1,680US 8,014,423 B2SMSC Holdings S.A.R.L. · 2011
- Diagnostic hardware for serial datalink1,169US 5,124,990 ACaterpillar Inc. · 1992
- Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels1,021US 5,943,422 AIntertrust Technologies Corporation · 1999
- Multi-tier architecture for control network949US 6,094,416 AI/O Control Corporation · 2000
- Trusted infrastructure support system, methods and techniques for secure electronic commerce transaction and rights management720US 6,658,568 B1Intertrust Technologies Corporation · 2003