B61L 27/04
Automatic systems
Official title: Automatic systems, e.g. controlled by train; Change-over to manual control
B61L27/04 (Automatic systems) appears on 283 US grants and 348 published applications in this corpus.
Search patents in B61L- Granted patents
- 283
- Published applications
- 348
- Assignees
- 129
- Inventors
- 748
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 1 | 2 |
| 2002 | 0 | 0 |
| 2003 | 2 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 3 |
| 2007 | 3 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 1 | 5 |
| 2011 | 1 | 3 |
| 2012 | 3 | 5 |
| 2013 | 6 | 4 |
| 2014 | 4 | 8 |
| 2015 | 5 | 10 |
| 2016 | 17 | 37 |
| 2017 | 22 | 29 |
| 2018 | 19 | 20 |
| 2019 | 22 | 19 |
| 2020 | 18 | 19 |
| 2021 | 9 | 40 |
| 2022 | 20 | 22 |
| 2023 | 24 | 28 |
| 2024 | 26 | 34 |
| 2025 | 35 | 32 |
| 2026 | 21 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and systems for decentralized rail signaling and positive train control6 Oct 2026US 12,752,823 B2Metrom Rail, LLC
- Method for carrying out an emergency stop for a train22 Sep 2026US 12,741,681 B2Siemens Mobility GmbH
- Transport vehicle15 Sep 2026US 12,735,267 B2Daifuku Co., Ltd.
- Train operation control method, vehicle on-board controller, and train18 Aug 2026US 12,709,315 B2BYD Company Limited
- Systems and methods for providing autonomous train driving strategy11 Aug 2026US 12,703,410 B2Progress Rail Locomotive Inc.
- Personal transportation system8 Oct 2026US 2026/0307695 A1TPT Technologies, Inc.
- System and method for optimizing utilization of hostler resources of a hub based on a dual-stream resource optimization8 Oct 2026US 2026/0307696 A1BNSF Railway Company
- Vehicle system and method1 Oct 2026US 2026/0296509 A1Transportation IP Holdings, LLC
- System and method for activating an electronic processing means of a vehicle, and control system24 Sep 2026US 2026/0285379 A1FAIVELEY TRANSPORT ITALIA S. p. A.
- Device, System And Method For Obstacle Detection Of A Vehicle17 Sep 2026US 2026/0274313 A1Siemens Aktiengesellschaft
Most cited
By later US patents
- Intelligent transport system176US 6,810,817 B12004
- System and method for automatic train operation132US 6,135,396 AGE Harris Railway Electronics, LLC · 2000
- Radio based railway signaling and traffic control system130US 4,711,418 AGeneral Signal Corporation · 1987
- Vehicle control system93US 4,023,753 AInternational Standard Electric Corporation · 1977
- Method for platooning of vehicles in an automated vehicle system66US 8,682,511 B2Posco · 2014