B61L 5/1836
Using light sources of different colours and separate optical systems
Official title: {using light sources of different colours and separate optical systems}
B61L5/1836 (Using light sources of different colours and separate optical systems) appears on 8 US grants and 6 published applications in this corpus.
Search patents in B61L- Granted patents
- 8
- Published applications
- 6
- Assignees
- 8
- Inventors
- 25
- Latest grant
- 21 Feb 2023
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 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 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 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Railroad color light signals including wind reduction elements21 Feb 2023US 11,584,409 B2Siemens Mobility GmbH
- Signal light assembly3 Aug 2021US 11,077,872 B2Siemens Mobility GmbH
- Indirect light mixing LED module for point-source applications16 Oct 2018US 10,100,984 B2GE Lighting Solutions, LLC
- LED retrofit module for railway signaling4 Apr 2017US 9,612,005 B2GE Lighting Solutions, LLC
- Optical element for traffic signs, display panels or the like19 Jun 2001US 6,249,375 B1Swarco Futurit Verkehrssignal Systeme Ges.M.B.H.
- Signal communication system2 May 2024US 2024/0140508 A1Transportation IP Holdings, LLC
- Railroad color light signals including wind reduction elements3 Mar 2022US 2022/0063687 A1Siemens Mobility GmbH
- Signal light assembly8 Jul 2021US 2021/0206404 A1Siemens Mobility GmbH
- Indirect light mixing led module for point-source applications20 Apr 2017US 2017/0108178 A1GE Lighting Solutions, LLC
- Integrated lamp assembly and method17 Nov 2016US 2016/0335889 A1Alstom Transport Technologies
Most cited
By later US patents
- Optical element for traffic signs, display panels or the like35US 6,249,375 B1Swarco Futurit Verkehrssignal Systeme Ges.M.B.H. · 2001
- Multi-color traffic signal30US 4,636,036 ASasib S.p.A. · 1987
- Multi-color traffic signal6US 4,283,716 ACir S.p.A. Divisione Sasib · 1981
- Railway light signal6US 5,433,166 AGeneral Railway Signal Corporation · 1995
- Indirect light mixing LED module for point-source applications2US 10,100,984 B2GE Lighting Solutions, LLC · 2018