F04F 1/08
Specially adapted for raising liquids from great depths
Official title: specially adapted for raising liquids from great depths, e.g. in wells
F04F1/08 (Specially adapted for raising liquids from great depths) appears on 84 US grants and 43 published applications in this corpus.
Search patents in F04F- Granted patents
- 84
- Published applications
- 43
- Assignees
- 30
- Inventors
- 106
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 9 | 0 |
| 2001 | 3 | 0 |
| 2002 | 4 | 2 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 2 | 1 |
| 2006 | 0 | 2 |
| 2007 | 2 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 3 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 0 | 1 |
| 2016 | 2 | 2 |
| 2017 | 1 | 1 |
| 2018 | 2 | 3 |
| 2019 | 1 | 4 |
| 2020 | 2 | 3 |
| 2021 | 3 | 5 |
| 2022 | 6 | 4 |
| 2023 | 3 | 2 |
| 2024 | 5 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Floatless pumps and control systems21 Apr 2026US 12,607,105 B2Nextech Environmental, LLC
- Landfill pump having metered cycling28 Oct 2025US 12,454,965 B2Graco Minnesota Inc.
- Brine dispersal system24 Dec 2024US 12,173,729 B2Natural Ocean Well Co.
- Brine dispersal system24 Dec 2024US 12,173,730 B2Natural Ocean Well Co.
- Pumping system26 Nov 2024US 12,152,608 B2Weir Minerals Netherlands B.V.
- Pneumatic pump control system13 Aug 2026US 2026/0235141 A1Jpc Holdings, LLC
- Landfill pump having metered cycling20 Mar 2025US 2025/0092884 A1Q.E.D. Environmental Systems, Inc.
- Brine dispersal system27 Feb 2025US 2025/0067281 A1OceanWell Co.
- Floatless pumps and control systems7 Mar 2024US 2024/0076971 A1Nextech Environmental, LLC
- Submerged reverse osmosis system21 Dec 2023US 2023/0407887 A1Natural Ocean Well Co.
Most cited
By later US patents
- Gas operated pump for hydrocarbon wells90US 6,973,973 B2Weatherford/Lamb, Inc. · 2005
- Airlift pump apparatus and method78US 6,162,020 ANCA2BioProcess, Inc. · 2000
- Gas operated pump for hydrocarbon wells72US 7,311,152 B2Weatherford/Lamb, Inc. · 2007
- Gas operated pump for hydrocarbon wells70US 7,445,049 B2Weatherford/Lamb, Inc. · 2008
- Gas lift optimization54US 4,738,313 ADelta-X Corporation · 1988