E04B 2002/0232
Undercut connections
Official title: {Undercut connections, e.g. using undercut tongues and grooves}
E04B2002/0232 (Undercut connections) appears on 121 US grants and 111 published applications in this corpus.
Search patents in E04B- Granted patents
- 121
- Published applications
- 111
- Assignees
- 53
- Inventors
- 197
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 4 |
| 2003 | 4 | 0 |
| 2004 | 2 | 1 |
| 2005 | 2 | 5 |
| 2006 | 1 | 1 |
| 2007 | 0 | 3 |
| 2008 | 3 | 5 |
| 2009 | 1 | 1 |
| 2010 | 3 | 6 |
| 2011 | 3 | 2 |
| 2012 | 1 | 5 |
| 2013 | 2 | 3 |
| 2014 | 4 | 8 |
| 2015 | 7 | 7 |
| 2016 | 7 | 15 |
| 2017 | 10 | 7 |
| 2018 | 7 | 7 |
| 2019 | 6 | 5 |
| 2020 | 3 | 4 |
| 2021 | 3 | 6 |
| 2022 | 3 | 5 |
| 2023 | 1 | 4 |
| 2024 | 7 | 4 |
| 2025 | 0 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Masonry system29 Sep 2026US 12,747,583 B2Associacao Blc3—Campus De Tecnologia E Inovacao
- Fixing device for mounting wall elements for constructing a wall21 Apr 2026US 12,607,011 B2Arlu NV
- Wall or ceiling panel and wall or ceiling assembly29 Oct 2024US 12,129,657 B2Unilin BV
- Arrangement applied to modular block with wedge-like couplings16 Jul 2024US 12,037,786 B2
- Interlocking building blocks and mortarless interlocking building system16 Apr 2024US 11,959,274 B2Plaex Building Systems Inc.
- Wall or ceiling panel and wall or ceiling assembly2 Jul 2026US 2026/0185360 A1Unilin BV
- Cuboid construction element, method for manufacturing a construction element, and system comprising two cuboid construction elements4 Sep 2025US 2025/0277363 A1
- Wall or ceiling panel and wall or ceiling assembly2 Jan 2025US 2025/0003224 A1Unilin BV
- Modular building system8 Aug 2024US 2024/0263442 A1Formx Inc.
- Fixing device for mounting wall elements for constructing a wall11 Apr 2024US 2024/0117630 A1Arlu NV
Most cited
By later US patents
- Apparatus for fabrication of concrete brick203US 4,869,660 A1989
- Universal structural element191US 6,874,291 B12005
- Modular construction member131US 5,775,046 AMassachusetts Institute of Technology · 1998
- Set of concrete building blocks for constructing a dry wall83US 4,896,999 A1990
- Formwork assembly for concrete walls69US 4,655,014 A1987