E01F 9/604
Specially adapted for particular signalling purposes
Official title: specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
E01F9/604 (Specially adapted for particular signalling purposes) appears on 397 US grants and 357 published applications in this corpus.
Search patents in E01F- Granted patents
- 397
- Published applications
- 357
- Assignees
- 212
- Inventors
- 788
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 9 | 0 |
| 1995 | 11 | 0 |
| 1996 | 11 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 9 | 0 |
| 2000 | 13 | 0 |
| 2001 | 8 | 2 |
| 2002 | 13 | 16 |
| 2003 | 12 | 6 |
| 2004 | 9 | 12 |
| 2005 | 6 | 5 |
| 2006 | 3 | 17 |
| 2007 | 3 | 8 |
| 2008 | 8 | 13 |
| 2009 | 6 | 6 |
| 2010 | 5 | 15 |
| 2011 | 6 | 6 |
| 2012 | 5 | 10 |
| 2013 | 10 | 10 |
| 2014 | 10 | 23 |
| 2015 | 12 | 12 |
| 2016 | 12 | 21 |
| 2017 | 15 | 13 |
| 2018 | 11 | 19 |
| 2019 | 16 | 27 |
| 2020 | 10 | 21 |
| 2021 | 15 | 15 |
| 2022 | 14 | 19 |
| 2023 | 16 | 22 |
| 2024 | 14 | 14 |
| 2025 | 10 | 12 |
| 2026 | 4 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Traffic sign add-on14 Jul 2026US 12,680,246 B2Imam Abdulrahman Bin Faisal University
- Safety barricade system for use with metal grate flooring28 Apr 2026US 12,612,749 B1
- Flowable luminescent coating composition and use thereof24 Mar 2026US 12,584,024 B2Imam Abdulrahman Bin Faisal University
- Systems, apparatuses, and methods for roadside safety emergencies10 Feb 2026US 12,545,179 B2
- Indicator sleeve for a traffic director25 Nov 2025US 12,480,267 B2Seemees, LLC
- Monitoring and control of traffic control devices in work zones8 Oct 2026US 2026/0308857 A1
- Base member for a bollard1 Oct 2026US 2026/0297871 A1Atg Access Ltd.
- Reflective traffic pole cover17 Sep 2026US 2026/0275663 A1Imam Abdulrahman Bin Faisal University
- Road safety system including multiple road markers providing road hazard information on fog and icing3 Sep 2026US 2026/0259348 A1Kj System
- Curable and flowable luminescent epoxy coating composition9 Jul 2026US 2026/0193475 A1Imam Abdulrahman Bin Faisal University
Most cited
By later US patents
- Illuminating device487US 5,136,483 A1992
- Marker apparatus232US 5,580,156 AKoito Manufacturing Co., Ltd. · 1996
- Solar warning light124US 5,453,729 A1995
- Radio frequency transponder method for identifying geographical locations such as survey traverse points123US 5,825,298 A1998
- Reflective trail markers118US 6,299,379 B1Lewis Hunting Accessories, Mfg., Inc. · 2001