E04F 21/1805
Ceiling panel lifting devices
Official title: {Ceiling panel lifting devices}
E04F21/1805 (Ceiling panel lifting devices) appears on 133 US grants and 81 published applications in this corpus.
Search patents in E04F- Granted patents
- 133
- Published applications
- 81
- Assignees
- 43
- Inventors
- 208
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 2 | 3 |
| 2005 | 1 | 4 |
| 2006 | 2 | 9 |
| 2007 | 1 | 3 |
| 2008 | 1 | 6 |
| 2009 | 4 | 3 |
| 2010 | 5 | 2 |
| 2011 | 1 | 0 |
| 2012 | 4 | 0 |
| 2013 | 3 | 5 |
| 2014 | 3 | 3 |
| 2015 | 1 | 3 |
| 2016 | 3 | 3 |
| 2017 | 3 | 5 |
| 2018 | 3 | 5 |
| 2019 | 5 | 7 |
| 2020 | 6 | 0 |
| 2021 | 2 | 6 |
| 2022 | 3 | 1 |
| 2023 | 1 | 1 |
| 2024 | 2 | 3 |
| 2025 | 1 | 0 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Acoustic tile installation tool26 Aug 2025US 12,397,400 B1
- Duct support device24 Dec 2024US 12,173,921 B2
- Autonomous robotic system for placing and fastening paneling material for building construction operations17 Sep 2024US 12,090,628 B2Purdue Research Foundation
- Autonomous robotic system for placing and fastening paneling material for building construction operations5 Sep 2023US 11,745,356 B2Purdue Research Foundation
- Method and system for automatically levelling dropped ceilings, floating floors, pipes or cable trays27 Dec 2022US 11,536,038 B2Akifix S.P.A. Con Socio Unico
- Construction workstation with rotatable platform and ceiling panel installation platform16 Jul 2026US 2026/0201709 A1
- Descending stroke adjustable device for a lifting tool26 Mar 2026US 2026/0084941 A1Altachem NV
- Drywall Lift Loader19 Feb 2026US 2026/0049485 A1
- Lifting mechanism for an apparatus for lifting contruction boards, lifting apparatus comprising such a mechanism, lifting method using such an apparatus15 Jan 2026US 2026/0015212 A1Edma
- Solar component storage and distribution devices10 Oct 2024US 2024/0336185 A1Array Tech, Inc.
Most cited
By later US patents
- Ceiling panel installation support with telescoping panel rest for ease of carrying85US 4,928,916 A1990
- Support70US 6,152,434 A2000
- Strut apparatus for holding drywall panels and building materials in position67US 5,979,854 A1999
- Sheet-rock lifter59US 5,129,774 A1992
- Panel overhead support apparatus57US 4,576,354 A1986