E04C 3/02
Joists
Official title: Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; {Braces}(E04C3/38 takes precedence; for structures characterised by movable, separable, or collapsible parts E04B1/343; {braced purlins E04B7/024})
E04C3/02 (Joists) appears on 3,245 US grants and 3,069 published applications in this corpus.
Search patents in E04C- Granted patents
- 3,245
- Published applications
- 3,069
- Assignees
- 1,592
- Inventors
- 5,039
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 32 | 0 |
| 1977 | 40 | 0 |
| 1978 | 29 | 0 |
| 1979 | 15 | 0 |
| 1980 | 17 | 0 |
| 1981 | 26 | 0 |
| 1982 | 31 | 0 |
| 1983 | 28 | 0 |
| 1984 | 36 | 0 |
| 1985 | 43 | 0 |
| 1986 | 38 | 0 |
| 1987 | 54 | 0 |
| 1988 | 25 | 0 |
| 1989 | 23 | 0 |
| 1990 | 29 | 0 |
| 1991 | 27 | 0 |
| 1992 | 31 | 0 |
| 1993 | 32 | 0 |
| 1994 | 43 | 0 |
| 1995 | 48 | 0 |
| 1996 | 56 | 0 |
| 1997 | 65 | 0 |
| 1998 | 76 | 0 |
| 1999 | 72 | 0 |
| 2000 | 79 | 0 |
| 2001 | 89 | 24 |
| 2002 | 93 | 111 |
| 2003 | 71 | 91 |
| 2004 | 64 | 139 |
| 2005 | 49 | 124 |
| 2006 | 55 | 120 |
| 2007 | 42 | 137 |
| 2008 | 35 | 111 |
| 2009 | 44 | 100 |
| 2010 | 80 | 110 |
| 2011 | 64 | 117 |
| 2012 | 75 | 114 |
| 2013 | 84 | 120 |
| 2014 | 134 | 145 |
| 2015 | 96 | 148 |
| 2016 | 121 | 146 |
| 2017 | 125 | 154 |
| 2018 | 118 | 136 |
| 2019 | 145 | 194 |
| 2020 | 144 | 126 |
| 2021 | 114 | 137 |
| 2022 | 94 | 121 |
| 2023 | 108 | 109 |
| 2024 | 96 | 108 |
| 2025 | 78 | 75 |
| 2026 | 32 | 52 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- E04C 3/04Of metal1,669
- E04C 3/29Built-up from parts of different material, i.e. composite structures749
- E04C 3/12Of wood613
- E04C 3/28Of materials not covered by groups e04c3/04 - e04c3/20283
- E04C 2003/026BracesIndexing code274
- E04C 3/20Of concrete or other stone-like material188
- E04C 2003/023LintelsIndexing code86
Recent patents
- System and method for maintaining a metal lintel in a masonry wall6 Oct 2026US 12,753,600 B2Craft Pro Masonry Restorations, Inc.
- Purlin construction with water flow system for flat panels22 Sep 2026US 12,742,324 B2
- Wall framing bracket and assembly15 Sep 2026US 12,735,888 B2Etex Australia PTY LTD
- Composite open web beam-joist and method of manufacture15 Sep 2026US 12,735,892 B2B&H Solutions LLC
- Attachment systems for pultruded, extruded, and molded parts25 Aug 2026US 12,715,520 B2Zephyros, Inc.
- Drywall Spacing Joist Hanger8 Oct 2026US 2026/0308903 A1
- Automated systems and methods for truss assemblies in the construction of modular buildings1 Oct 2026US 2026/0295896 A1Buildz, LLC
- Reconfigurable precast concrete construction system1 Oct 2026US 2026/0297942 A1Massachusetts Institute of Technology
- Lightweight structure made of composite materials1 Oct 2026US 2026/0297945 A1
- Truss assembly using metal plates1 Oct 2026US 2026/0299541 A1Simpson Strong-Tie Company, Inc.
Most cited
By later US patents
- Mounting rail212US 5,927,041 AHilti Aktiengesellschaft · 1999
- Manufacture of wooden beams207US 4,738,071 AEzijoin Pty. Ltd. · 1988
- Composite wood beam and method of making same203US 4,501,102 A1985
- Manufacture of wooden beams186US 4,653,242 AEzijoin Pty. Ltd. · 1987
- Wooden joist with web members having cut tapered edges and vent slots182US 4,715,162 ATrus Joist Corporation · 1987