E04H 4/084
With lifting mechanism
Official title: {with lifting mechanism}
E04H4/084 (With lifting mechanism) appears on 114 US grants and 107 published applications in this corpus.
Search patents in E04H- Granted patents
- 114
- Published applications
- 107
- Assignees
- 35
- Inventors
- 126
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 4 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 2 |
| 2003 | 4 | 2 |
| 2004 | 4 | 7 |
| 2005 | 3 | 6 |
| 2006 | 3 | 5 |
| 2007 | 5 | 11 |
| 2008 | 1 | 2 |
| 2009 | 6 | 4 |
| 2010 | 2 | 6 |
| 2011 | 3 | 5 |
| 2012 | 2 | 4 |
| 2013 | 3 | 4 |
| 2014 | 2 | 5 |
| 2015 | 2 | 4 |
| 2016 | 2 | 6 |
| 2017 | 8 | 3 |
| 2018 | 1 | 5 |
| 2019 | 8 | 3 |
| 2020 | 5 | 5 |
| 2021 | 2 | 1 |
| 2022 | 3 | 5 |
| 2023 | 3 | 4 |
| 2024 | 3 | 4 |
| 2025 | 4 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Spa cover lift system18 Aug 2026US 12,709,909 B2Strong Industries, Inc.
- Cover detection system for spas17 Mar 2026US 12,579,881 B2Sundance Spas, Inc.
- Spa cover lift2 Dec 2025US 12,486,686 B2Roberts Manufacturing LLC
- Lift system for a spa cover1 Jul 2025US 12,345,066 B2Strong Industries, Inc.
- Hot tub cover hoist mechanism8 Apr 2025US 12,270,222 B2
- Automatic lift system for a spa covers6 Aug 2026US 2026/0226761 A1Strong Industries, Inc.
- System and Method to Convert Spa Cover Lifts to Electric13 Nov 2025US 2025/0347131 A1
- Pool cover assembly6 Nov 2025US 2025/0341107 A1
- Spa pool cover lifter, and a spa pool including a spa pool cover lifter5 Jun 2025US 2025/0179825 A1Vortex Leisure Pty Ltd
- Hot Tub Cover Hoist Mechanism21 Nov 2024US 2024/0384551 A1
Most cited
By later US patents