B61L 7/10
For light signals
Official title: for light signals, e.g. for supervision, back-signalling
B61L7/10 (For light signals) appears on 11 US grants and 6 published applications in this corpus.
Search patents in B61L- Granted patents
- 11
- Published applications
- 6
- Assignees
- 11
- Inventors
- 22
- Latest grant
- 12 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 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 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 2 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Rail signal arrangement for a rail signaling system12 Jul 2022US 11,383,743 B2Unipart Rail Limited
- Solar powered cell network switch point indicator system28 Sep 2021US 11,130,508 B2RailSwitchNet, LLC
- Lamp driver card to control lighting of a lamp load or a LED on a wayside of a railway system9 Jul 2019US 10,349,503 B2Siemens Mobility GmbH
- Monitoring system, wayside LED signaling device, and method for monitoring a wayside LED signaling device4 Apr 2017US 9,610,959 B2Siemens Industry, Inc.
- Method and apparatus for revealing errors in the case of a light signal7 Feb 2017US 9,562,952 B2Siemens Aktiengesellschaft
- Signal communication system2 May 2024US 2024/0140508 A1Transportation IP Holdings, LLC
- Solar powered cell network switch point indicator system16 Jan 2020US 2020/0017131 A1RailSwitchNet, LLC
- Rail Signal Arrangement for a Rail Signaling System14 Mar 2019US 2019/0077428 A1Unipart Rail Limited
- Lamp driver card to control lighting of a lamp load or a led on a wayside of a railway system16 Aug 2018US 2018/0235054 A1Siemens Industry, Inc.
- Monitoring system, wayside led signaling device, and method for monitoring a wayside led signaling device1 Dec 2016US 2016/0347336 A1Siemens Industry, Inc.
Most cited
By later US patents
- Vehicle control unit29US 4,198,678 AInternational Standard Electric Corporation · 1980
- Facility for monitoring the operation of a signal lamp18US 4,808,982 AAlcatel · 1989
- Device for the signal-technical secure control and monitoring of electrical loads11US 4,356,485 ASiemens Aktiengesellschaft · 1982
- Track circuit6US 3,951,364 AGeneral Signal Corporation · 1976
- Monitoring system, wayside LED signaling device, and method for monitoring a wayside LED signaling device6US 9,610,959 B2Siemens Industry, Inc. · 2017