E04F 15/0247
Screw jacks
Official title: {Screw jacks}
E04F15/0247 (Screw jacks) appears on 146 US grants and 167 published applications in this corpus.
Search patents in E04F- Granted patents
- 146
- Published applications
- 167
- Assignees
- 78
- Inventors
- 253
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 3 |
| 2003 | 0 | 3 |
| 2004 | 1 | 6 |
| 2005 | 1 | 8 |
| 2006 | 2 | 2 |
| 2007 | 1 | 4 |
| 2008 | 1 | 3 |
| 2009 | 4 | 11 |
| 2010 | 1 | 6 |
| 2011 | 6 | 8 |
| 2012 | 8 | 7 |
| 2013 | 8 | 4 |
| 2014 | 7 | 4 |
| 2015 | 3 | 5 |
| 2016 | 4 | 6 |
| 2017 | 6 | 13 |
| 2018 | 10 | 6 |
| 2019 | 2 | 1 |
| 2020 | 8 | 17 |
| 2021 | 8 | 10 |
| 2022 | 6 | 4 |
| 2023 | 3 | 8 |
| 2024 | 6 | 9 |
| 2025 | 4 | 9 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Roof drain and promenade support7 Jul 2026US 12,674,324 B2Zurn Water, LLC
- Raised floor and assembling method thereof7 Jul 2026US 12,674,331 B2Anhui Coordinated Lin Plastic Technology Co., Ltd.
- Paver supporting apparatus28 Apr 2026US 12,612,742 B2Hanover Prest-Paving Company
- Universal support for raised floors, with open ring locking the tilting function7 Apr 2026US 12,595,667 B2Mapei S.P.A.
- Modular decking system17 Mar 2026US 12,577,773 B2
- Paver Supporting Apparatus20 Aug 2026US 2026/0243032 A1Hanover Prest-Paving Company
- Support device for batten fixing structure30 Jul 2026US 2026/0218505 A1Sullivan Marques Sl
- Selective anchoring device for raised floors23 Jul 2026US 2026/0210131 A1Dakota Group S.A.S. Di Zeno Cipriani & C.
- Elevating mechanism and elevated floor elevating device16 Jul 2026US 2026/0201708 A1Vero Veria Corporation
- Adhesive Anchoring of Subfloor14 May 2026US 2026/0132637 A1
Most cited
By later US patents
- Floor system144US 5,333,423 A1994
- Adjustable pedestal for elevated floors135US 4,558,544 AH. H. Robertson Company · 1985
- Method and apparatus for selectively adjusting the elevation of an undulating or plannar surface115US 6,363,685 B12002
- Device and structure for supporting floor panels100US 4,996,804 ANaka Corporation · 1991
- Combined floor pedestal and floor outlet91US 4,780,571 A1988