E04H 4/105
Supported by air pressure under the cover
Official title: {supported by air pressure under the cover}
E04H4/105 (Supported by air pressure under the cover) appears on 14 US grants and 5 published applications in this corpus.
Search patents in E04H- Granted patents
- 14
- Published applications
- 5
- Assignees
- 3
- Inventors
- 27
- Latest grant
- 21 May 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 2 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Inflatable surface-covering device21 May 2024US 11,988,014 B2Becoflex
- Modular removable covering and barrier system4 Jul 2023US 11,692,366 B1
- Device and method for winterizing the skim filter port of an in-ground pool15 Mar 2016US 9,284,742 B1
- Bladder for winterizing a swimming pool6 Dec 2011US 8,069,504 B1
- Inflatable safety swimming pool cover25 Jan 2011US 7,874,023 B1
- Inflatable surface-covering device17 Feb 2022US 2022/0049513 A1Becoflex
- Heat-insulating air dome3 Jan 2019US 2019/0003200 A1
- System and method for securing cover over retention pond using negative pressure29 Dec 2016US 2016/0376761 A1
- Cover28 Aug 2014US 2014/0242332 A1Sunbubble Limited
- Swimming pool covering system28 Jun 2007US 2007/0143915 A1
Most cited
By later US patents
- Swimming pool cover assembly130US 4,790,037 AAir-Lok Pool Covers, Inc. · 1988
- Inflatable cover for a swimming pool21US 4,048,678 A1977
- Inflatable swimming pool cover system21US 4,109,325 A1978
- Spa cover21US 5,373,590 A1994
- Floatable cover capable of partially or fully covering swimming pools19US 4,122,561 A1978