E04B 2/18
By interlocking of projections or inserts with indentations
Official title: by interlocking of projections or inserts with indentations, e.g. of tongues, grooves, dovetails
E04B2/18 (By interlocking of projections or inserts with indentations) appears on 213 US grants and 196 published applications in this corpus.
Search patents in E04B- Granted patents
- 213
- Published applications
- 196
- Assignees
- 93
- Inventors
- 321
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 7 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 4 | 1 |
| 2004 | 0 | 4 |
| 2005 | 2 | 3 |
| 2006 | 1 | 1 |
| 2007 | 1 | 3 |
| 2008 | 1 | 4 |
| 2009 | 1 | 2 |
| 2010 | 1 | 1 |
| 2011 | 1 | 3 |
| 2012 | 2 | 2 |
| 2013 | 2 | 8 |
| 2014 | 10 | 11 |
| 2015 | 9 | 8 |
| 2016 | 9 | 17 |
| 2017 | 12 | 12 |
| 2018 | 7 | 18 |
| 2019 | 8 | 16 |
| 2020 | 12 | 14 |
| 2021 | 12 | 13 |
| 2022 | 13 | 13 |
| 2023 | 9 | 11 |
| 2024 | 13 | 12 |
| 2025 | 5 | 12 |
| 2026 | 8 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Masonry system29 Sep 2026US 12,747,583 B2Associacao Blc3—Campus De Tecnologia E Inovacao
- Plantable retaining wall block and retaining walls thereof18 Aug 2026US 12,709,858 B2Cornerstone Wall Solutions Inc.
- Interlocking construction blocks18 Aug 2026US 12,709,890 B2Samaraee & Daniel Innovation Specialists Incorporated
- Interlocking construction blocks11 Aug 2026US 12,703,973 B2Samaraee & Daniel Innovation Specialists Incorporated
- Plastic building blocks14 Apr 2026US 12,601,171 B2ECO Snap Blocks, INC.
- Self-aligning wall block6 Aug 2026US 2026/0226736 A1Anchor Wall Systems, Inc.
- Locking blocks and methods of using same14 May 2026US 2026/0132618 A1Moxietec, LLC
- Concrete Masonry Unit Composition for Automated Block Machines2 Apr 2026US 2026/0092010 A1
- Mortarless interlocking concrete block system26 Feb 2026US 2026/0055603 A1
- Interlocking construction blocks5 Feb 2026US 2026/0035911 A1Samaraee & Daniel Innovation Specialists Incorporated
Most cited
By later US patents
- Interlocking cementitious building blocks137US 4,107,894 A1978
- Modular construction member131US 5,775,046 AMassachusetts Institute of Technology · 1998
- Mortarless concrete block system having reinforcing bond beam courses80US 4,426,815 A1984
- Interlocking block75US 5,457,926 ATempleton Trust · 1995
- Building block73US 5,471,808 A1995