E04F 21/1816
Fluid pressure-operated
Official title: {fluid pressure-operated (E04F21/1822 and E04F21/1827 take precedence)}
E04F21/1816 (Fluid pressure-operated) appears on 22 US grants and 9 published applications in this corpus.
Search patents in E04F- Granted patents
- 22
- Published applications
- 9
- Assignees
- 9
- Inventors
- 33
- Latest grant
- 9 Jun 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 2 | 3 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Lifting cart for building construction9 Jun 2020US 10,676,944 B2
- Drywall sheet lifting device5 Nov 2019US 10,465,400 B1
- Drywall lifting apparatus26 Mar 2019US 10,240,354 B2
- Precast lightweight wall panel installation machine16 Oct 2018US 10,100,541 B1Joe Green Pte. Ltd.
- Panel hoist26 Apr 2016US 9,321,615 B2Snap-on Incorporated
- Equipment for the movement and laying of ceramic articles, particularly large-format tiles1 Aug 2019US 2019/0234083 A1Frignano Servizi S.R.L. A Capitale Ridotto
- Lifting cart for building construction16 May 2019US 2019/0145113 A1
- Drywall lifting apparatus31 Jan 2019US 2019/0032344 A1
- Precast lightweight wall panel installation machine4 Oct 2018US 2018/0283020 A1Joe Green Pte. Ltd.
- Panel Hoist2 Oct 2014US 2014/0294540 A1Snap-on Incorporated
Most cited
By later US patents
- Multi-directional lifting and handling attachment for a boom-type vehicle25US 5,073,077 A1991
- Hoist for installing cabinets, ceiling frames and the like24US 4,715,760 A1987
- Sheet material lifting and retaining apparatus24US 6,082,945 A2000
- Building panel positioner23US 4,027,802 A1977
- Multi-directional lifting and handling attachment for a boom-type vehicle20US 5,114,294 A1992