B61L 3/246
Using coded current
Official title: {using coded current}
B61L3/246 (Using coded current) appears on 23 US grants and 9 published applications in this corpus.
Search patents in B61L- Granted patents
- 23
- Published applications
- 9
- Assignees
- 17
- Inventors
- 54
- Latest grant
- 7 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 2 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Linear induction motor excitation modulation based communication7 May 2024US 11,979,203 B2Rockwell Collins, Inc.
- Wayside to railway vehicle communication method and device9 May 2023US 11,643,122 B2Alstom Transport Technologies
- Train control network, method for communication and method for controlling train integrity4 Oct 2022US 11,460,288 B2Thales Management & Services Deutschland GmbH
- Railway circuit for sending signalling information along a railway line to a vehicle travelling along the railway line11 Aug 2015US 9,102,340 B2Ansaldo STS S.p.A.
- Train control system with pulse-code-modulated cab signaling7 Apr 2015US 8,998,147 B2Siemens Aktiengesellschaft
- Linear induction motor excitation modulation based communication17 Nov 2022US 2022/0368378 A1Rockwell Collins, Inc.
- Wayside to railway vehicle communication method and device24 Jun 2021US 2021/0188335 A1Alstom Transport Technologies
- Train control network, method for communication and method for controlling train integrity24 Sep 2020US 2020/0300600 A1Thales Management & Services Deutschland GmbH
- Systems and methods for communicating via a track with an industrial cart20 Dec 2018US 2018/0367614 A1Grow Solutions Tech LLC
- Railway circuit for sending signalling information along a railway line to a vehicle travelling along the railway line8 May 2014US 2014/0124628 A1Ansaldo STS S.p.A.
Most cited
By later US patents
- Cab signalling system utilizing coded track circuit signals37US 5,263,670 AUnion Switch & Signal Inc. · 1993
- Cab signal track code analyzer system32US 5,358,202 AConsolidated Rail Corporation · 1994
- Cab signal apparatus and method24US 5,459,663 AUnion Switch & Signal Inc. · 1995
- Audiofrequency track circuit with data transmission (digital TC); transceiver interface24US 5,720,454 ASasib Railway S.p.A. · 1998
- Method for increasing the number of signals which may be transmitted from a ground station to a rail vehicle12US 4,720,067 A1988