E01F 9/631
Specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or
Official title: specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or displaced, e.g. by vehicle impact
E01F9/631 (Specially adapted for breaking, disengaging, collapsing or permanently deforming when deflected or) appears on 210 US grants and 94 published applications in this corpus.
Search patents in E01F- Granted patents
- 210
- Published applications
- 94
- Assignees
- 110
- Inventors
- 293
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 3 |
| 2002 | 12 | 6 |
| 2003 | 6 | 6 |
| 2004 | 3 | 3 |
| 2005 | 5 | 2 |
| 2006 | 2 | 7 |
| 2007 | 2 | 7 |
| 2008 | 1 | 6 |
| 2009 | 1 | 2 |
| 2010 | 3 | 6 |
| 2011 | 3 | 5 |
| 2012 | 2 | 1 |
| 2013 | 4 | 4 |
| 2014 | 3 | 5 |
| 2015 | 2 | 2 |
| 2016 | 4 | 3 |
| 2017 | 3 | 4 |
| 2018 | 1 | 2 |
| 2019 | 2 | 4 |
| 2020 | 2 | 4 |
| 2021 | 5 | 1 |
| 2022 | 3 | 3 |
| 2023 | 3 | 1 |
| 2024 | 3 | 3 |
| 2025 | 0 | 1 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Roadway safety device6 Oct 2026US 12,753,557 B2Argo Corp, Inc.
- Roadway safety device13 Aug 2024US 12,060,686 B2Argo Corp, Inc.
- Articulated utility pole26 Mar 2024US 11,940,004 B1Adkins Energy Concepts LLC
- Helical pile foundation system9 Jan 2024US 11,866,894 B2Gregory Enterprises, Inc.
- Articulated utility pole3 Oct 2023US 11,773,898 B1Adkins Energy Concepts LLC
- Torque-Limiting Coupling System for Use in Breakaway Mounting Systems for Roadway Signposts and Methods of Use1 Oct 2026US 2026/0298294 A1
- Breakaway Sign Support Post30 Apr 2026US 2026/0117472 A1
- Bolt Retainer System30 Apr 2026US 2026/0117805 A1
- Roadway safety device17 Jul 2025US 2025/0230616 A1Argo Corp, Inc.
- Safe zone post assembly11 Jul 2024US 2024/0229383 A1
Most cited
By later US patents
- Portable fence119US 5,402,988 ASpecialty Recreation Equipment, Inc. · 1995
- Breakaway sign post coupling95US 4,926,592 AUnistrut International Corp. · 1990
- Collapsible highway barrier76US 4,784,515 AEnergy Absorption Systems, Inc. · 1988
- Breakaway connector74US 4,923,319 A1990
- Guard rail construction70US 4,330,106 A1982