F04F 5/26
Of multi-stage type
Official title: of multi-stage type (F04F5/28 takes precedence)
F04F5/26 (Of multi-stage type) appears on 9 US grants and 5 published applications in this corpus.
Search patents in F04F- Granted patents
- 9
- Published applications
- 5
- Assignees
- 11
- Inventors
- 26
- Latest grant
- 19 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Air lift pump19 Apr 2022US 11,306,744 B2University of Guelph
- Multi-stage vacuum ejector10 Sep 2019US 10,408,234 B2Onishi Teknik AB
- Apparatus and method for liquid pumping27 Feb 2018US 9,902,630 B2Coldharbour Marine Limited
- Feed water heating system for power-generating plant29 Aug 2000US 6,109,037 AKabushiki Kaisha Toshiba
- Rankine cycle boiler feed via hydrokinetic amplifier18 Aug 1998US 5,794,447 AHelios Research Corp.
- Nebulizer28 Dec 2023US 2023/0414883 A1Murata Manufacturing Co., Ltd.
- Nozzle Appliance for a Jet Pump and Jet Pump14 Sep 2023US 2023/0287903 A1
- Air lift pump18 Nov 2021US 2021/0355967 A1University of Guelph
- Multi-stage vacuum ejector1 Jun 2017US 2017/0152868 A1Onishi Teknik AB
- Apparatus and method for liquid pumping5 Nov 2015US 2015/0315047 A1Coldharbour Marine Limited
Most cited
By later US patents
- Method and apparatus for improving erosion resistance of the mixing chamber of a jet pump19US 4,310,288 AKobe, Inc. · 1982
- Thermal absorption compression cycle15US 5,586,442 AHelios Research Corp. · 1996
- Method of treating waste water with jet nozzles11US 4,009,100 ABASF SE · 1977
- Mining apparatus and jet pump therefor10US 4,718,835 AIdc, LLC · 1988
- Feed water heating system for power-generating plant8US 6,109,037 AKabushiki Kaisha Toshiba · 2000