B61L 29/08
Operation of gates
Official title: Operation of gates; Combined operation of gates and signals
B61L29/08 (Operation of gates) appears on 153 US grants and 158 published applications in this corpus.
Search patents in B61L- Granted patents
- 153
- Published applications
- 158
- Assignees
- 55
- Inventors
- 221
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 4 | 1 |
| 2002 | 1 | 3 |
| 2003 | 4 | 0 |
| 2004 | 0 | 6 |
| 2005 | 2 | 3 |
| 2006 | 1 | 2 |
| 2007 | 4 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 2 | 4 |
| 2012 | 4 | 6 |
| 2013 | 5 | 6 |
| 2014 | 8 | 12 |
| 2015 | 7 | 3 |
| 2016 | 3 | 6 |
| 2017 | 11 | 7 |
| 2018 | 3 | 9 |
| 2019 | 6 | 8 |
| 2020 | 6 | 8 |
| 2021 | 8 | 21 |
| 2022 | 11 | 13 |
| 2023 | 12 | 11 |
| 2024 | 16 | 11 |
| 2025 | 9 | 7 |
| 2026 | 7 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Grade crossing system including grade crossing predictor in electrified propulsion territory1 Sep 2026US 12,722,676 B2Siemens Mobility GmbH
- Wayside device monitoring system and method21 Jul 2026US 12,686,425 B2Transportation IP Holdings, LLC
- Crossing gate mechanism with integrated position detection and angle measurement21 Jul 2026US 12,686,426 B2Siemens Mobility GmbH
- Railway detection system, railway infrastructure and method for detecting the presence of a railway vehicle2 Jun 2026US 12,643,583 B2
- Railroad crossing control system with auxiliary shunting device28 Apr 2026US 12,612,091 B2Siemens Mobility GmbH
- Intersection management system17 Sep 2026US 2026/0274316 A1Transportation IP Holdings, LLC
- Intelligent Railroad At-Grade Crossings21 May 2026US 2026/0138655 A1Cavnue Technology, LLC
- Train simulator test set and method therefor7 May 2026US 2026/0125087 A1BNSF Railway Company
- Systems and methods for remote activation of railroad crossing signals12 Feb 2026US 2026/0042474 A1BNSF Railway Company
- Systems and methods for providing motor control for a crossing gate mechanism4 Dec 2025US 2025/0373181 A1Siemens Mobility GmbH
Most cited
By later US patents
- Intelligent rail crossing control system and train tracking system87US 6,179,252 B2The Texas A&M University System · 2001
- Electronically controlled grade crossing gate system and method67US 7,195,211 B2General Electric Company · 2007
- Method and system for ensuring that a train does not pass an improperly configured device66US 6,996,461 B2Quantum Engineering, Inc. · 2006
- Wireless railroad grade crossing warning system56US 5,864,304 AAT&T Corp. · 1999
- Vehicle presence detection system49US 6,195,020 B13461513 Canada Inc. · 2001