E04C 3/20
Of concrete or other stone-like material
Official title: of concrete or other stone-like material, e.g. with reinforcements or tensioning members (reinforcing elements E04C5/00)
E04C3/20 (Of concrete or other stone-like material) appears on 188 US grants and 192 published applications in this corpus.
Search patents in E04C- Granted patents
- 188
- Published applications
- 192
- Assignees
- 140
- Inventors
- 432
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 9 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 2 |
| 2002 | 1 | 3 |
| 2003 | 3 | 6 |
| 2004 | 3 | 12 |
| 2005 | 5 | 6 |
| 2006 | 6 | 9 |
| 2007 | 2 | 3 |
| 2008 | 3 | 3 |
| 2009 | 2 | 6 |
| 2010 | 2 | 8 |
| 2011 | 2 | 10 |
| 2012 | 2 | 4 |
| 2013 | 5 | 7 |
| 2014 | 7 | 8 |
| 2015 | 7 | 9 |
| 2016 | 5 | 14 |
| 2017 | 9 | 10 |
| 2018 | 15 | 15 |
| 2019 | 7 | 11 |
| 2020 | 16 | 8 |
| 2021 | 6 | 11 |
| 2022 | 6 | 7 |
| 2023 | 2 | 8 |
| 2024 | 10 | 7 |
| 2025 | 4 | 3 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatuses and methods for constructing a concrete structure using precast concrete components27 Jan 2026US 12,534,901 B2Tindall Corporation
- Waffle slab and structures and method of manufacturing the same16 Sep 2025US 12,416,151 B2Ruentex Engineering & Construction Co., Ltd.
- Composite structural element, a structure including the composite structural element, and a method of forming the composite structural element6 May 2025US 12,291,867 B1King Saud University
- Printing system for creating a concrete support structure for a passenger transport system29 Apr 2025US 12,286,803 B2Inventio AG
- Structural truss, assembly and method of manufacture18 Feb 2025US 12,227,945 B2Net Zero Projects Limited
- Reconfigurable precast concrete construction system1 Oct 2026US 2026/0297942 A1Massachusetts Institute of Technology
- Assembly22 Jan 2026US 2026/0022530 A1Fsc Technologies LLC
- Connectors for joining timber structures25 Sep 2025US 2025/0297478 A1Fast + Epp Structural Engineers Inc.
- Anchorage System For Prestressing Non-Metallic Tendons26 Jun 2025US 2025/0207396 A1Rutgers, The State University of New Jersey
- Construction method for concrete structure integrated with waveguide tube15 May 2025US 2025/0154765 A1Korea Testing Laboratory
Most cited
By later US patents
- Structural member and system60US 4,007,574 A1977
- Indirectly prestressed, concrete, roof-ceiling construction with flat soffit55US 7,448,170 B2Mara-Institut d.o.o. · 2008
- Pressed blocks for interlocked assembly44US 4,262,463 ABureau d'Etudes Techniques J. Hapel & Cie Ingenieurs Conseils Chillou · 1981
- Modular fiber-reinforced composite structural member42US 6,189,286 B1The Regents of the University of California at San Diego · 2001
- Reinforcement device for supporting structures37US 6,851,232 B1Sika Schweiz AG · 2005