E04F 21/1877
Leveling devices
Official title: {Leveling devices}
E04F21/1877 (Leveling devices) appears on 114 US grants and 129 published applications in this corpus.
Search patents in E04F- Granted patents
- 114
- Published applications
- 129
- Assignees
- 44
- Inventors
- 113
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 8 |
| 2014 | 3 | 4 |
| 2015 | 9 | 11 |
| 2016 | 9 | 9 |
| 2017 | 8 | 7 |
| 2018 | 10 | 9 |
| 2019 | 6 | 13 |
| 2020 | 12 | 13 |
| 2021 | 10 | 8 |
| 2022 | 6 | 22 |
| 2023 | 7 | 4 |
| 2024 | 10 | 4 |
| 2025 | 8 | 8 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Ceramic tile leveling bracket, pushing and clamping pliers, and ceramic tile leveling and laying system6 Oct 2026US 12,753,615 B2Hangzhou Great Star Industrial Co., Ltd.
- Tile installation systems and methods of using same21 Jul 2026US 12,687,027 B2Builders Adventure, Inc.
- Tile leveler21 Apr 2026US 12,607,024 B2
- Levelling spacer system24 Feb 2026US 12,559,951 B2Raimondi S.P.A.
- Device for leveling and aligning tiles and method for leveling and aligning tiles24 Feb 2026US 12,559,952 B2Acufloor, LLC
- Device for Leveling and Aligning Tiles and Method for Leveling and Aligning Tiles11 Jun 2026US 2026/0160075 A1Acufloor, LLC
- Device for Leveling and Aligning Tiles and Method for Leveling and Aligning Tiles11 Jun 2026US 2026/0160076 A1Acufloor, LLC
- Device for Leveling and Aligning Tiles and Method for Leveling and Aligning Tiles11 Jun 2026US 2026/0160077 A1Acufloor, LLC
- Device for Leveling and Aligning Tiles and Method for Leveling and Aligning Tiles5 Mar 2026US 2026/0062926 A1Acufloor, LLC
- Device for Leveling and Aligning Tiles and Method for Leveling and Aligning Tiles5 Mar 2026US 2026/0062927 A1Acufloor, LLC
Most cited
By later US patents
- Tile lippage removal system61US 9,279,259 B12016
- Tile leveling system53US 9,657,485 B22017
- Device for leveling and aligning tiles and method for leveling and aligning tiles47US 9,487,959 B22016
- Tile leveler and method39US 5,263,260 A1993
- Reusable shim shell mechanical edge setting system and method for setting tiles and tuning lippage39US 9,045,911 B2New Standards Manufacturing Co. · 2015