E04H 17/21
With hollow cross sections
Official title: {with hollow cross sections}
E04H17/21 (With hollow cross sections) appears on 58 US grants and 77 published applications in this corpus.
Search patents in E04H- Granted patents
- 58
- Published applications
- 77
- Assignees
- 41
- Inventors
- 124
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 3 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 2 | 1 |
| 2015 | 1 | 4 |
| 2016 | 4 | 6 |
| 2017 | 1 | 4 |
| 2018 | 3 | 3 |
| 2019 | 4 | 4 |
| 2020 | 2 | 1 |
| 2021 | 0 | 4 |
| 2022 | 4 | 6 |
| 2023 | 6 | 5 |
| 2024 | 4 | 10 |
| 2025 | 8 | 4 |
| 2026 | 5 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Mixed material horizontal aluminum fence system and method8 Sep 2026US 12,729,560 B2Barrette Outdoor Living, Inc.
- Gate post adjustment insert4 Aug 2026US 12,698,644 B2
- Lattice assembly14 Jul 2026US 12,680,332 B2Permalatt Products, Inc.
- Ground sleeve for installing a fence post23 Jun 2026US 12,662,846 B2
- Fence assembly16 Jun 2026US 12,655,652 B2La Corporation De Clotures Inc.
- Modular Barrier System17 Sep 2026US 2026/0275761 A1McCue Corporation
- Security Post3 Sep 2026US 2026/0258671 A1
- Sleeve for vinyl fence post anchor13 Aug 2026US 2026/0234962 A1Highpoint Administrators, Inc.
- Fencing Systems Including Reversible Slats30 Jul 2026US 2026/0218538 A1Alwood Industries
- Post assembly with vertical compression channel25 Jun 2026US 2026/0176889 A1Patriot Custom Metals, LLC
Most cited
By later US patents