B61L 25/041
Using reflecting tags
Official title: {using reflecting tags}
B61L25/041 (Using reflecting tags) appears on 18 US grants and 5 published applications in this corpus.
Search patents in B61L- Granted patents
- 18
- Published applications
- 5
- Assignees
- 13
- Inventors
- 35
- Latest grant
- 22 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 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 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Guideway mounted vehicle localization and alignment system and method22 Feb 2022US 11,254,338 B2Thales Canada Inc.
- Track barcode systems for railroad management2 Jun 2015US 9,045,151 B2Tech4U Dynamics Inc.
- Automatic identification method and system for train information13 Aug 2013US 8,509,969 B2Nuctech Company Limited
- Portable communications unit17 May 2005US 6,895,221 B2Tagmaster AB
- Video observation systems24 Oct 1989US 4,876,597 AADT Security Systems, Inc.
- Coded material media read by means of sensitive sensors through the relative displacement of both29 Aug 2019US 2019/0266458 A1Auto Drive Solutions, S.L.
- Guideway mounted vehicle localization and alignment system and method28 Mar 2019US 2019/0092360 A1Thales Canada Inc.
- Track Barcode Systems for Railroad Management18 Dec 2014US 2014/0367462 A1Tech4U Dynamics Inc.
- Automatic Identification Method and System for Train Information27 Jan 2011US 2011/0022253 A1Nuctech Company Limited
- Portable communications unit8 Apr 2004US 2004/0067734 A1Tagmaster AB
Most cited
By later US patents
- Video observation systems138US 4,876,597 AADT Security Systems, Inc. · 1989
- Method and apparatus for extracting information from an object that is within a large interrogation zone37US 4,491,923 AMinnesota Mining and Manufacturing Company · 1985
- Multiplexed optical scanner system34US 3,958,104 AServo Corporation of America · 1976
- Automatic car identification system15US 4,160,522 A1979
- Object-identification system with sequentially activated photocell array13US 4,070,584 AThomson-CSF · 1978