F04C 19/008
Port members in the form of conical or cylindrical pieces situated in
Official title: {Port members in the form of conical or cylindrical pieces situated in the centre of the impeller}
F04C19/008 (Port members in the form of conical or cylindrical pieces situated in) appears on 52 US grants and 46 published applications in this corpus.
Search patents in F04C- Granted patents
- 52
- Published applications
- 46
- Assignees
- 14
- Inventors
- 59
- Latest grant
- 28 Nov 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 4 |
| 2005 | 0 | 3 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 2 | 8 |
| 2009 | 1 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 4 | 3 |
| 2014 | 1 | 5 |
| 2015 | 4 | 3 |
| 2016 | 1 | 4 |
| 2017 | 4 | 1 |
| 2018 | 2 | 1 |
| 2019 | 2 | 2 |
| 2020 | 2 | 2 |
| 2021 | 3 | 2 |
| 2022 | 2 | 1 |
| 2023 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
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- Liquid ring pump manifold3 Jan 2023US 11,542,943 B2Edwards Technologies Vacuum Engineering (Qingdao) Company Limited
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- Pressurized vapor cycle liquid distillation1 Mar 2022US 11,260,316 B2DEKA Products Limited Partnership
- Safety-reinforced water-ring vacuum pump including built-in hogging flow path11 May 2023US 2023/0146497 A1Vaccomp Co., Ltd.
- Centrifugal Air Compressor and Control25 Aug 2022US 2022/0268286 A1Pecheanu Air Compressors Inc.
- Pressurized Vapor Cycle Liquid Distillation10 Jun 2021US 2021/0170299 A1DEKA Products Limited Partnership
- Liquid ring pump manifold18 Feb 2021US 2021/0048027 A1Edwards Technologies Vacuum Engineering (Qingdao) Company Limited
- Pressurized Vapor Cycle Liquid Distillation19 Nov 2020US 2020/0360832 A1DEKA Products Limited Partnership
Most cited
By later US patents
- Liquid ring pumps with hermetically sealed motor rotors52US 7,465,375 B2DEKA Products Limited Partnership · 2008
- Pressurized vapor cycle liquid distillation43US 7,597,784 B2DEKA Products Limited Partnership · 2009
- Sealing and dynamic operation of a liquid ring pump36US 4,747,752 ASomarakis, Inc. · 1988
- Bearing fluid distribution systems for liquid ring pumps with rotating lobe liners36US 5,197,863 AThe Nash Engineering Company · 1993
- Liquid ring pump with conical or cylindrical port member29US 4,498,844 AThe Nash Engineering Company · 1985