E04C 3/29
Built-up from parts of different material, i.e. composite structures
Official title: built-up from parts of different material, {i.e. composite structures}
E04C3/29 (Built-up from parts of different material, i.e. composite structures) appears on 749 US grants and 644 published applications in this corpus.
Search patents in E04C- Granted patents
- 749
- Published applications
- 644
- Assignees
- 427
- Inventors
- 1,255
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 14 | 0 |
| 1978 | 12 | 0 |
| 1979 | 8 | 0 |
| 1980 | 7 | 0 |
| 1981 | 12 | 0 |
| 1982 | 10 | 0 |
| 1983 | 10 | 0 |
| 1984 | 10 | 0 |
| 1985 | 11 | 0 |
| 1986 | 11 | 0 |
| 1987 | 10 | 0 |
| 1988 | 6 | 0 |
| 1989 | 9 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 11 | 0 |
| 1993 | 4 | 0 |
| 1994 | 11 | 0 |
| 1995 | 14 | 0 |
| 1996 | 16 | 0 |
| 1997 | 15 | 0 |
| 1998 | 24 | 0 |
| 1999 | 21 | 0 |
| 2000 | 28 | 0 |
| 2001 | 28 | 5 |
| 2002 | 23 | 23 |
| 2003 | 18 | 28 |
| 2004 | 14 | 34 |
| 2005 | 9 | 37 |
| 2006 | 11 | 32 |
| 2007 | 4 | 23 |
| 2008 | 8 | 23 |
| 2009 | 8 | 20 |
| 2010 | 14 | 28 |
| 2011 | 16 | 25 |
| 2012 | 21 | 21 |
| 2013 | 14 | 21 |
| 2014 | 23 | 29 |
| 2015 | 15 | 28 |
| 2016 | 24 | 30 |
| 2017 | 24 | 30 |
| 2018 | 22 | 36 |
| 2019 | 29 | 36 |
| 2020 | 34 | 22 |
| 2021 | 23 | 22 |
| 2022 | 17 | 32 |
| 2023 | 23 | 22 |
| 2024 | 18 | 16 |
| 2025 | 12 | 14 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Attachment systems for pultruded, extruded, and molded parts25 Aug 2026US 12,715,520 B2Zephyros, Inc.
- Floor system26 May 2026US 12,637,858 B2Mitek Holdings, Inc.
- Ceiling suspension bracket24 Feb 2026US 12,559,940 B2Mitek Holdings, Inc.
- Pipe support systems and methods3 Feb 2026US 12,540,636 B2Universal City Studios LLC
- Drywall spacing joist hanger27 Jan 2026US 12,534,903 B2Simpson Strong-Tie Company, Inc.
- Drywall Spacing Joist Hanger8 Oct 2026US 2026/0308903 A1
- Lightweight structure made of composite materials1 Oct 2026US 2026/0297945 A1
- Bamboo structures, and methods for fabrication and use thereof30 Apr 2026US 2026/0117459 A1University of Maryland, College Park
- Precast concrete column with embedded recycled component and construction method therefor19 Mar 2026US 2026/0078583 A1South China University of Technology
- Length-adjustable truss12 Mar 2026US 2026/0071430 A1North Georgia Truss Systems, LLC
Most cited
By later US patents
- Composite wood beam and method of making same203US 4,501,102 A1985
- Reinforced channel-shaped structural member methods168US 6,270,600 B1Henkel Corporation · 2001
- Composite insulated framing members and envelope extension system for buildings142US 6,125,608 AUnited States Building Technology, Inc. · 2000
- Reinforced channel-shaped structural member131US 5,888,600 AHenkel Corporation · 1999
- Internal reinforcement for hollow structural elements128US 6,058,673 AHenkel Corporation · 2000