B61L 1/12
Electric devices associated with overhead trolley wires
B61L1/12 (Electric devices associated with overhead trolley wires) appears on 3 US grants and 3 published applications in this corpus.
Search patents in B61L- Granted patents
- 3
- Published applications
- 3
- Assignees
- 4
- Inventors
- 11
- Latest grant
- 8 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 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 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Monitoring system for monitoring a condition of an electric rail system and/or of a current collector of the rail system8 Apr 2025US 12,269,519 B2Aktiebolaget Skf
- Wireless train communication system via access points on train power poles10 May 2022US 11,325,503 B2Icomera AB
- System for automatically controlling an electrically propelled traction vehicle traversing a gap in wayside source of power24 Nov 1981US 4,301,899 AGeneral Electric Company
- Electric train system with integrated communication system17 Sep 2020US 2020/0290481 A1Icomera AB
- Monitoring system for monitoring a condition of an electric rail system and/or of a current collector of the rail system9 Jan 2020US 2020/0010100 A1Aktiebolaget Skf
- Method and arrangement for monitoring current collectors and horizontal and vertical contact wire position on vehicle combinations1 Nov 2012US 2012/0274759 A1Siemens Aktiengesellschaft
Most cited
By later US patents