E04C 3/38
Arched girders or portal frames
Official title: Arched girders or portal frames (straight girders able to be bent E04C3/02; inflatable E04H15/20)
E04C3/38 (Arched girders or portal frames) appears on 370 US grants and 265 published applications in this corpus.
Search patents in E04C- Granted patents
- 370
- Published applications
- 265
- Assignees
- 172
- Inventors
- 569
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 8 | 0 |
| 1983 | 5 | 0 |
| 1984 | 9 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 3 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 8 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 7 | 0 |
| 1999 | 7 | 0 |
| 2000 | 16 | 0 |
| 2001 | 9 | 3 |
| 2002 | 13 | 12 |
| 2003 | 11 | 14 |
| 2004 | 8 | 9 |
| 2005 | 6 | 14 |
| 2006 | 2 | 12 |
| 2007 | 4 | 5 |
| 2008 | 2 | 9 |
| 2009 | 6 | 6 |
| 2010 | 6 | 11 |
| 2011 | 1 | 8 |
| 2012 | 5 | 16 |
| 2013 | 12 | 11 |
| 2014 | 15 | 16 |
| 2015 | 16 | 11 |
| 2016 | 9 | 5 |
| 2017 | 6 | 20 |
| 2018 | 6 | 11 |
| 2019 | 19 | 27 |
| 2020 | 14 | 13 |
| 2021 | 13 | 8 |
| 2022 | 7 | 7 |
| 2023 | 5 | 7 |
| 2024 | 5 | 1 |
| 2025 | 6 | 8 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Engineered beam with adjustable angle connection8 Apr 2025US 12,270,193 B2
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- Engineered beam with adjustable angle connection19 Mar 2026US 2026/0078576 A1
- Modular structure for providing on-site protection18 Sep 2025US 2025/0290335 A1Bam Nuttall Limited
- Arch for Metal Canopy Without Welding10 Jul 2025US 2025/0223805 A1
- Prefabricated building systems with built-up structural elements29 May 2025US 2025/0172001 A1Folding Holdings, LLC
- Multiple cable, column and beam structures for supporting solar panels within a structural grid22 May 2025US 2025/0167720 A1P4P Energy LLC D/B/A Conger Solar
Most cited
By later US patents
- Construction element90US 5,511,355 A1996
- Vehicle bumper beam with non-uniform cross section82US 6,349,521 B1Shape Corp. · 2002
- Concrete walls for buildings and method of forming76US 5,335,472 A1994
- Unitary metal structural member with internal reinforcement71US 6,955,023 B22005
- Gusset plate connections for structural braced systems65US 6,516,583 B12003