E04B 1/21
Connections specially adapted therefor
E04B1/21 (Connections specially adapted therefor) appears on 190 US grants and 161 published applications in this corpus.
Search patents in E04B- Granted patents
- 190
- Published applications
- 161
- Assignees
- 122
- Inventors
- 381
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 8 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 3 |
| 2003 | 2 | 2 |
| 2004 | 2 | 5 |
| 2005 | 1 | 3 |
| 2006 | 0 | 2 |
| 2007 | 2 | 1 |
| 2008 | 1 | 4 |
| 2009 | 1 | 2 |
| 2010 | 4 | 8 |
| 2011 | 0 | 3 |
| 2012 | 2 | 0 |
| 2013 | 4 | 10 |
| 2014 | 6 | 5 |
| 2015 | 6 | 5 |
| 2016 | 4 | 6 |
| 2017 | 6 | 12 |
| 2018 | 9 | 16 |
| 2019 | 15 | 12 |
| 2020 | 19 | 12 |
| 2021 | 9 | 14 |
| 2022 | 9 | 6 |
| 2023 | 7 | 7 |
| 2024 | 6 | 9 |
| 2025 | 8 | 9 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and apparatus for connecting precast concrete elements11 Aug 2026US 12,703,972 B2Structural Connections IP Pty Ltd
- Fire-resistant cover for corbel system17 Mar 2026US 12,577,794 B2ALP Supply, Inc.
- Framing member, construction panel, and methods of manufacturing10 Feb 2026US 12,546,105 B2
- Connection system for concrete sections10 Feb 2026US 12,546,129 B2ERICO International Corporation
- Apparatuses and methods for constructing a concrete structure using precast concrete components27 Jan 2026US 12,534,901 B2Tindall Corporation
- Inter-layer pc column connection node structure and building24 Sep 2026US 2026/0286677 A1Chengdu Zhiente Technology Co., Ltd.
- Column-beam joint structure using hybrid mounting bracket17 Sep 2026US 2026/0275704 A1Senvex Co., Ltd.
- Systems and methods for connecting uhpc structural elements17 Sep 2026US 2026/0275705 A1The Florida International University Board of Trustees
- Fire-Resistant Cover for Corbel System9 Jul 2026US 2026/0193892 A1ALP Supply, Inc.
- Waffle slab structure, floor structure and method for constructing floor structure23 Apr 2026US 2026/0110175 A1Ruentex Engineering & Construction Co., Ltd.
Most cited
By later US patents
- Form assembly for building framework62US 4,125,973 ARealsources, Inc. · 1978
- Bolted chord bar connector for concrete construction54US 4,781,006 A1988
- Connection for joining precast concrete panels48US 5,134,828 AHigh Industries, Inc. · 1992
- Column/beam joint structure47US 4,905,436 AHitachi Metals, Ltd. · 1990
- Building construction46US 4,951,438 AOstspenn Holding a/s · 1990