B61L 3/121
Using magnetic induction
Official title: {using magnetic induction}
B61L3/121 (Using magnetic induction) appears on 66 US grants and 62 published applications in this corpus.
Search patents in B61L- Granted patents
- 66
- Published applications
- 62
- Assignees
- 45
- Inventors
- 159
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 4 |
| 2011 | 2 | 2 |
| 2012 | 1 | 2 |
| 2013 | 6 | 5 |
| 2014 | 1 | 6 |
| 2015 | 3 | 9 |
| 2016 | 4 | 9 |
| 2017 | 9 | 3 |
| 2018 | 2 | 2 |
| 2019 | 5 | 1 |
| 2020 | 0 | 6 |
| 2021 | 1 | 1 |
| 2022 | 6 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 2 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Arrangement for train protection2 Sep 2025US 12,403,944 B2Siemens Mobility GmbH
- System, apparatus, and method for ground transportation8 Apr 2025US 12,269,522 B1Souts-Ng, LLC
- Vehicle-based device for receiving information from a track-based transmission device14 Feb 2023US 11,577,764 B2Siemens Mobility GmbH
- System and method for protecting a communication between a balise and a guided vehicle from cross-talk25 Oct 2022US 11,479,279 B2Siemens Aktiengesellschaft
- Method, vehicle device and controller for operating a track-bound traffic system25 Oct 2022US 11,479,282 B2Siemens Mobility GmbH
- Arrangement for train protection10 Apr 2025US 2025/0115284 A1Siemens Mobility GmbH
- Method for locating and/or measuring the speed of a vehicle20 Jul 2023US 2023/0227083 A1
- Onboard control device, wayside coil, ground control device, wireless train control system, and train location correction method28 Apr 2022US 2022/0126898 A1Mitsubishi Electric Corporation
- Vehicle-based device for receiving information from a track-based transmission device10 Jun 2021US 2021/0171074 A1Siemens Mobility GmbH
- System and method for protecting a communication between a balise and a guided vehicle from cross-talk10 Dec 2020US 2020/0385035 A1Siemens Mobility GmbH
Most cited
By later US patents
- Method and apparatus for initializing an automated train control system109US 5,803,411 AABB Daimler-Benz Transportation (North America) Inc. · 1998
- Method and apparatus for controlling remote locomotive operation54US 6,505,103 B1GE Harris Harmon Railway Technology, LLC · 2003
- Electromagnetic system for railroad track crack detection and traction enhancement48US 6,262,573 B1General Electric Company · 2001
- Track to train communication systems40US 5,055,835 ABritish Railways Board · 1991
- Wayside oriented moving block38US 4,166,599 AGeneral Signal Corporation · 1979