B61C 3/02
Electric locomotives or railcars: with electric accumulators
Official title: with electric accumulators
B61C3/02 (Electric locomotives or railcars: with electric accumulators) appears on 79 US grants and 115 published applications in this corpus.
Search patents in B61C- Granted patents
- 79
- Published applications
- 115
- Assignees
- 58
- Inventors
- 232
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 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 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 4 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 4 |
| 2011 | 0 | 1 |
| 2012 | 1 | 2 |
| 2013 | 2 | 6 |
| 2014 | 5 | 7 |
| 2015 | 5 | 4 |
| 2016 | 3 | 2 |
| 2017 | 3 | 4 |
| 2018 | 2 | 2 |
| 2019 | 1 | 11 |
| 2020 | 5 | 10 |
| 2021 | 4 | 9 |
| 2022 | 10 | 8 |
| 2023 | 7 | 17 |
| 2024 | 12 | 12 |
| 2025 | 10 | 4 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bogie for a light rail system25 Aug 2026US 12,715,309 B2The Council of the City of Coventry Council House
- Articulated vehicle arrangement for a rail freight train18 Aug 2026US 12,709,310 B2Sws Ps Power Solutions GmbH
- Self-contained power source for railcars28 Jul 2026US 12,691,913 B2Intramotev Inc.
- Vehicle control system and method13 Jan 2026US 12,522,097 B2Transportation IP Holdings, LLC
- Auxiliary power controller14 Oct 2025US 12,441,196 B2BNSF Railway Company
- Power supply switching device, drive control apparatus, and moving body23 Jul 2026US 2026/0208601 A1Mitsubishi Electric Corporation
- Auxiliary power controller18 Jun 2026US 2026/0167005 A1BNSF Railway Company
- Traction system of a hydrogen-electric locomotive and an energy transfer method14 May 2026US 2026/0131830 A1Korea Railroad Research Institute
- Electric rail vehicle28 Aug 2025US 2025/0269882 A1Parallel Systems, Inc.
- Arrangement for driving a vehicle coupled to a trailer17 Jul 2025US 2025/0229811 A1Siemens Mobility GmbH
Most cited
By later US patents
- Battery-powered vehicle with AC driven traction and pump motors for mining applications55US 7,053,568 B2Oldenburg Group Incorporated · 2006
- Multimode hybrid energy railway vehicle system and method49US 7,430,967 B2General Electric Company · 2008
- Multiple engine locomotive configuration40US 7,565,867 B22009
- Multimode hybrid energy railway vehicle system and method35US 7,231,877 B2General Electric Company · 2007
- Battery-powered all-electric locomotive and related locomotive and train configurations16US 8,342,103 B2Norfolk Southern Corporation · 2013