E04C 3/28
Of materials not covered by groups e04c3/04 - e04c3/20
Official title: of materials not covered by groups E04C3/04 - E04C3/20
E04C3/28 (Of materials not covered by groups e04c3/04 - e04c3/20) appears on 283 US grants and 281 published applications in this corpus.
Search patents in E04C- Granted patents
- 283
- Published applications
- 281
- Assignees
- 185
- Inventors
- 508
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 9 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 11 | 2 |
| 2002 | 6 | 7 |
| 2003 | 5 | 6 |
| 2004 | 4 | 21 |
| 2005 | 6 | 20 |
| 2006 | 7 | 10 |
| 2007 | 8 | 16 |
| 2008 | 3 | 10 |
| 2009 | 3 | 1 |
| 2010 | 5 | 13 |
| 2011 | 11 | 7 |
| 2012 | 6 | 10 |
| 2013 | 11 | 14 |
| 2014 | 8 | 16 |
| 2015 | 6 | 5 |
| 2016 | 10 | 18 |
| 2017 | 9 | 16 |
| 2018 | 14 | 18 |
| 2019 | 9 | 11 |
| 2020 | 13 | 8 |
| 2021 | 13 | 12 |
| 2022 | 8 | 12 |
| 2023 | 15 | 14 |
| 2024 | 8 | 4 |
| 2025 | 10 | 8 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stiffening structure intended to stiffen a component made of thermosetting composite material, and associated stiffening method4 Nov 2025US 12,459,218 B2Arianegroup SAS
- Multifunctional design housing components16 Sep 2025US 12,416,153 B2The AZEK Group LLC
- Collapsible tubular mast (CTM) with surface material between trusses8 Jul 2025US 12,351,346 B2Opterus Research and Development, Inc.
- Hemp-based structural composites and methods of making hemp-based structural composites20 May 2025US 12,305,393 B1
- Carbon fiber structure, and a method for forming the carbon fiber structure22 Apr 2025US 12,279,608 B2Exel Industries
- Connection joint of closure ofspace grid and truss structure and construction method thereof25 Jun 2026US 2026/0177090 A1China Railway No. 4 Engineering Group Co., Ltd
- Assembly22 Jan 2026US 2026/0022530 A1Fsc Technologies LLC
- Fiberglass and graphene reinforced polymeric bar and method of production thereof11 Dec 2025US 2025/0375941 A1
- Multifunctional design housing components11 Dec 2025US 2025/0376842 A1The AZEK Group LLC
- A wall stud made of hardboard18 Sep 2025US 2025/0290317 A1Umazing AB
Most cited
By later US patents
- Structural honeycomb panel building system116US 6,253,530 B12001
- Reinforcing member with thermally expansible structural reinforcing material and directional shelf105US 6,253,524 B1Sika Corporation · 2001
- Structural members of composite wood material and process for making same103US 4,241,133 ABoard of Control of Michigan Technological University · 1980
- Plastic-composite profiled girder, in particular a wing spar for aircraft and for wind-turbine rotors100US 5,476,704 AHoac-Austria Flugzeugwerk Wr.Neustadt Gesellschaft m.b.H. · 1995
- Deck plank and cover92US 5,613,339 AHeritage Vinyl Products, Inc. · 1997