F27D 27/007
Pulsating pumps
Official title: {Pulsating pumps}
F27D27/007 (Pulsating pumps) appears on 8 US grants and 3 published applications in this corpus.
Search patents in F27D- Granted patents
- 8
- Published applications
- 3
- Assignees
- 6
- Inventors
- 32
- Latest grant
- 8 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 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 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Molten metal pump, and method of adjusting pumping power of molten metal pump8 Aug 2023US 11,717,884 B2
- Molten metal stirring device3 Nov 1992US 5,160,479 ASumitomo Light Metal Industries, Ltd.
- Molten metal stirring equipment7 Aug 1984US 4,463,935 AShinmei Engineering Company Limited
- Method of stirring molten metal and refractory cylinder for the purpose5 Jun 1984US 4,452,634 AKawasaki Steel Corporation
- Method of refining molten metal with stirring by repeated operation of suction and discharge24 Jan 1984US 4,427,444 AKawasaki Steel Corporation
- Method of dross extraction using heated nitrogen and accumulated pressure displacement nozzles25 Jan 2024US 2024/0026510 A1Cleveland-Cliffs Steel Properties Inc.
- Electrolytic smelting furnace and electrolytic smelting method26 Jan 2023US 2023/0026097 A1Mitsubishi Heavy Industries, Ltd.
- Molten metal pump, and method of adjusting pumping power of molten metal pump7 Jan 2021US 2021/0001397 A1
Most cited
By later US patents
- Stirring molten metal115US 4,008,884 AAlcan Research and Development Limited · 1977
- Method and apparatus for stirring molten metal4US 4,235,626 A1980
- Molten metal stirring equipment4US 4,463,935 AShinmei Engineering Company Limited · 1984
- Method of gas-dynamic stirring of liquid molten metals and apparatus for performing same2US 4,236,917 A1980
- Method of stirring molten metal and refractory cylinder for the purpose2US 4,452,634 AKawasaki Steel Corporation · 1984