F04D 15/0044
By introducing a gas
Official title: {by introducing a gas}
F04D15/0044 (By introducing a gas) appears on 14 US grants and 7 published applications in this corpus.
Search patents in F04D- Granted patents
- 14
- Published applications
- 7
- Assignees
- 10
- Inventors
- 36
- Latest grant
- 7 Apr 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 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 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Contra-rotating multi-layer propeller unit for multi-phase flow7 Apr 2020US 10,609,910 B2Korea University Research and Business Foundation
- Performance prediction device and performance prediction method for compressor22 May 2018US 9,976,552 B2Hitachi, Ltd.
- Centrifugal fuel pump with variable pressure control20 Feb 2018US 9,897,054 B2Honeywell International Inc.
- Axial compressor and control method thereof to stabilize fluid10 May 2016US 9,334,869 B2Korea Aerospace Research Institute
- Mix-in structure for gas or the like in pressurization centrifugal pump17 Oct 2006US 7,121,786 B2Yonehara Giken Co., Ltd.
- Contra-rotating multi-layer propeller unit for multi-phase flow5 Jul 2018US 2018/0184626 A1Korea University Research and Business Foundation
- Spiral Pump, Device for Treatment of Water and Associated Method9 Feb 2017US 2017/0037862 A1
- Performance prediction device and performance prediction method for compressor27 Oct 2016US 2016/0312776 A1Hitachi, Ltd.
- Centrifugal fuel pump with variable pressure control21 Jul 2016US 2016/0208759 A1Honeywell International Inc.
- Axial compressor and control method thereof to stabilize fluid17 Oct 2013US 2013/0272845 A1Korea Aerospace Research Institute
Most cited
By later US patents
- Centrifugal fuel pump with variable pressure control30US 9,897,054 B2Honeywell International Inc. · 2018
- Aquarium power head with integral muffler9US 5,137,433 AWillinger Bros., Inc. · 1992
- Aquarium power head with integral muffler9US 5,282,727 AWillinger Bros., Inc. · 1994
- Method of starting operation for a pump or a pump turbine8US 3,960,463 AHitachi, Ltd. · 1976
- Procedure and equipment for injecting gas into liquids8US 4,282,062 ABabcock-Brown Boveri Reaktor GmbH · 1981