E04B 2/821
Connections between two opposed surfaces by means of a device offering a
Official title: {Connections between two opposed surfaces (i.e. floor and ceiling) by means of a device offering a restraining force acting in the plane of the partition}
E04B2/821 (Connections between two opposed surfaces by means of a device offering a) appears on 91 US grants and 75 published applications in this corpus.
Search patents in E04B- Granted patents
- 91
- Published applications
- 75
- Assignees
- 51
- Inventors
- 170
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 3 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 6 |
| 2013 | 4 | 1 |
| 2014 | 0 | 2 |
| 2015 | 2 | 6 |
| 2016 | 3 | 5 |
| 2017 | 2 | 0 |
| 2018 | 0 | 5 |
| 2019 | 7 | 4 |
| 2020 | 1 | 7 |
| 2021 | 2 | 4 |
| 2022 | 4 | 8 |
| 2023 | 5 | 6 |
| 2024 | 6 | 4 |
| 2025 | 4 | 1 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Modular wall system21 Jul 2026US 12,687,014 B2Allsteel Inc.
- Modular wall system16 Jun 2026US 12,655,631 B1
- Profile and construction element set for arranging a component for a drywall construction, and drywall formed therewith12 May 2026US 12,624,545 B2Knauf Gips KG
- Process for making a paneled wall having abutment joints sealed by a dual gasket assembly24 Mar 2026US 12,584,309 B2Ddp Specialty Electronic Materials US, LLC
- Paneled wall system comprising a dual gasket assembly17 Mar 2026US 12,577,777 B2Ddp Specialty Electronic Materials US, LLC
- Rail end mount and methods of use30 Jul 2026US 2026/0218817 A1Zipwall, LLC
- Curtain assemblies having improved insulating characteristics and related methods11 Jun 2026US 2026/0160060 A1Rite-Hite Holding Corporation
- Flexible air duct systems and methods of installation and use thereof27 Nov 2025US 2025/0361955 A1Zipwall, LLC
- Locking Edge Joiner System For A Temporary Wall System1 Aug 2024US 2024/0254762 A1Signature Wall Solutions, Inc.
- Profile and Construction Element Set for Arranging a Component for a Drywall Construction, and Drywall Formed Therewith16 May 2024US 2024/0159043 A1Knauf Gips KG
Most cited
By later US patents
- Portable wall system164US 4,103,463 APanelfold Doors, Inc. · 1978
- Seismic/fire resistant wall structure and method140US 5,127,203 A1992
- Metal stud building system and method119US 6,871,470 B12005
- Wall system101US 4,991,368 AAmstore Corporation · 1991
- Portable and operable wall system89US 4,454,690 APanelfold, Inc. · 1984