E01F 9/30
Arrangements interacting with transmitters or receivers otherwise than by visible means
Official title: Arrangements interacting with transmitters or receivers otherwise than by visible means, e.g. using radar reflectors or radio transmitters (E01F11/00 takes precedence)
E01F9/30 (Arrangements interacting with transmitters or receivers otherwise than by visible means) appears on 112 US grants and 143 published applications in this corpus.
Search patents in E01F- Granted patents
- 112
- Published applications
- 143
- Assignees
- 68
- Inventors
- 236
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 2 |
| 2003 | 1 | 3 |
| 2004 | 4 | 3 |
| 2005 | 1 | 1 |
| 2006 | 4 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 3 |
| 2017 | 3 | 9 |
| 2018 | 10 | 12 |
| 2019 | 4 | 8 |
| 2020 | 8 | 12 |
| 2021 | 10 | 14 |
| 2022 | 12 | 17 |
| 2023 | 7 | 17 |
| 2024 | 11 | 9 |
| 2025 | 14 | 12 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Smart road marking construction method, smart road markings and autonomous driving system using the same26 May 2026US 12,637,815 B2Korea Institute of Civil Engineering and Building Technology
- Vehicle-oriented system and information reading method21 Apr 2026US 12,608,007 B2Aichi Steel Corporation
- RF navigation for motor vehicles24 Feb 2026US 12,560,698 B2TechNickel, Inc.
- Sensor-enabled system and method for monitoring the health, condition, and/or status of infrastructure23 Dec 2025US 12,504,268 B2Tensar International Corporation
- Vehicle tracking system using smart-phone as active transponder23 Dec 2025US 12,505,322 B2Amtech Systems, LLC
- Monitoring and control of traffic control devices in work zones8 Oct 2026US 2026/0308857 A1
- Road safety system including multiple road markers providing road hazard information on fog and icing3 Sep 2026US 2026/0259348 A1Kj System
- Retroreflectors providing information encoded in reflected non-visible laser while retaining visible light safety properties20 Aug 2026US 2026/0243931 A1Lighthouse Technology Group Inc.
- Vehicle tracking system using smartphone as active transponder26 Mar 2026US 2026/0087284 A1Amtech Systems, LLC
- Sensor-enabled system and method for monitoring the health, condition, and/or status of infrastructure19 Mar 2026US 2026/0078996 A1Tensar International Corporation
Most cited
By later US patents
- Radio frequency transponder method for identifying geographical locations such as survey traverse points123US 5,825,298 A1998
- Vehicle disabling device and method119US 5,503,059 A1996
- Method and apparatus for lane sensing for automatic vehicle steering79US 5,318,143 AThe Texas A&M University System · 1994
- Vehicle drive override system76US 6,643,578 B22003
- Conformable magnetic articles underlaid beneath traffic-bearing surfaces59US 5,853,846 AMinnesota Mining and Manufacturing Company · 1998