B61L 29/30
Supervision
Official title: Supervision, e.g. monitoring arrangements
B61L29/30 (Supervision) appears on 123 US grants and 157 published applications in this corpus.
Search patents in B61L- Granted patents
- 123
- Published applications
- 157
- Assignees
- 53
- Inventors
- 224
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 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 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 4 |
| 2006 | 4 | 9 |
| 2007 | 2 | 2 |
| 2008 | 4 | 5 |
| 2009 | 0 | 2 |
| 2010 | 3 | 2 |
| 2011 | 1 | 3 |
| 2012 | 2 | 1 |
| 2013 | 4 | 5 |
| 2014 | 3 | 7 |
| 2015 | 1 | 6 |
| 2016 | 6 | 4 |
| 2017 | 2 | 6 |
| 2018 | 5 | 14 |
| 2019 | 12 | 12 |
| 2020 | 10 | 6 |
| 2021 | 10 | 17 |
| 2022 | 8 | 10 |
| 2023 | 10 | 7 |
| 2024 | 12 | 13 |
| 2025 | 6 | 11 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Intrusion detection6 Oct 2026US 12,752,827 B2International Electronic Machines Corp.
- Railroad crossing warning system for enhanced route planning based on spectrogram analysis1 Sep 2026US 12,722,675 B2
- Grade crossing system including grade crossing predictor in electrified propulsion territory1 Sep 2026US 12,722,676 B2Siemens Mobility GmbH
- Predictive railroad crossing safety notification and traffic control system and methods19 May 2026US 12,630,204 B2AJ Technologies LLC
- Crossing gate mechanism with integrated maintenance status alarm10 Feb 2026US 12,548,426 B2Siemens Mobility GmbH
- Systems and methods with enhanced predictive railroad crossing traffic notification and railroad worker safety notification2 Jul 2026US 2026/0184357 A1
- Methods and systems for ultra-wideband (uwb) based subway personnel detection2 Apr 2026US 2026/0093024 A1Metrom Rail, LLC
- Method for monitoring a track section, railroad system, computer program product and computer-readable storage medium2 Apr 2026US 2026/0094452 A1Siemens Mobility GmbH
- Systems and methods for remote activation of railroad crossing signals12 Feb 2026US 2026/0042474 A1BNSF Railway Company
- Systems and methods for controlling a railroad crossing gate8 Jan 2026US 2026/0008488 A1
Most cited
By later US patents
- Traffic warning system107US 7,075,427 B1EVA Signal Corporation · 2006
- Video detection apparatus for monitoring a railroad crossing68US 5,825,412 AEsco Electronics Corporation · 1998
- Remote monitoring of grade crossing warning equipment41US 6,688,561 B2General Electric Company · 2004
- Operations monitoring in an area38US 10,202,135 B2International Electronic Machines Corp. · 2019
- Processing system for grade crossing warning29US 4,581,700 ASAB Harmon Industries, Inc. · 1986