E04G 11/40
For coffered or ribbed ceilings
Official title: for coffered or ribbed ceilings
E04G11/40 (For coffered or ribbed ceilings) appears on 70 US grants and 45 published applications in this corpus.
Search patents in E04G- Granted patents
- 70
- Published applications
- 45
- Assignees
- 29
- Inventors
- 97
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 3 |
| 2005 | 1 | 3 |
| 2006 | 1 | 2 |
| 2007 | 0 | 3 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 2 | 2 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 3 |
| 2019 | 1 | 2 |
| 2020 | 2 | 3 |
| 2021 | 1 | 2 |
| 2022 | 2 | 7 |
| 2023 | 7 | 3 |
| 2024 | 2 | 2 |
| 2025 | 5 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Stay-in-place concrete floor and ceiling system without steel reinforcing made from recycled wind blades6 Jan 2026US 12,516,522 B2ST Bungalow LLC
- Waffle slab and structures and method of manufacturing the same16 Sep 2025US 12,416,151 B2Ruentex Engineering & Construction Co., Ltd.
- Composite conduit formwork structure and method of fabrication15 Jul 2025US 12,359,427 B2Forma Technologies Inc.
- Floor panel system24 Jun 2025US 12,338,640 B2Bailey Metal Products Limited
- Formwork mechanism for casting and moulding concrete, comprising a coffer with a sheet and four plates arranged around the sheet's perimeter13 May 2025US 12,297,652 B2
- Waffle slab and structures and method of manufacturing the same4 Apr 2024US 2024/0109224 A1Ruentex Engineering & Construction Co., Ltd.
- Stay-in-place concrete floor and ceiling system without steel reinforcing made from recycled wind blades14 Mar 2024US 2024/0084590 A1ST Bungalow LLC
- Concrete structure forming system21 Dec 2023US 2023/0405869 A1Conewago Manufacturing, LLC
- Formwork mechanism for casting and moulding concrete, comprising a coffer with a sheet and four plates arranged around the sheet's perimeter26 Oct 2023US 2023/0340793 A1
- Composite conduit formwork structure and method of fabrication29 Jun 2023US 2023/0203809 A1Forma Technologies Inc.
Most cited
By later US patents
- Concrete slab-beam form system for composite metal deck concrete construction55US 4,685,264 AEpic Metals Corporation · 1987
- Stiffeners for aircraft structural panels52US 6,766,984 B1ICOM Engineering, Inc. · 2004
- Composite concrete and steel floor construction31US 3,979,868 AHambro Structural Systems Ltd. · 1976
- Adjustable hanger25US 4,846,433 ADayton Superior Corporation · 1989
- Construction form support member23US 3,993,282 AComposite Construction Systems, Inc. · 1976