F04D 29/167
Of a centrifugal flow wheel
Official title: {of a centrifugal flow wheel}
F04D29/167 (Of a centrifugal flow wheel) appears on 186 US grants and 179 published applications in this corpus.
Search patents in F04D- Granted patents
- 186
- Published applications
- 179
- Assignees
- 153
- Inventors
- 436
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 1 |
| 2003 | 1 | 4 |
| 2004 | 3 | 5 |
| 2005 | 3 | 4 |
| 2006 | 1 | 7 |
| 2007 | 5 | 8 |
| 2008 | 5 | 6 |
| 2009 | 3 | 6 |
| 2010 | 4 | 2 |
| 2011 | 4 | 9 |
| 2012 | 4 | 4 |
| 2013 | 1 | 12 |
| 2014 | 4 | 16 |
| 2015 | 8 | 12 |
| 2016 | 8 | 6 |
| 2017 | 15 | 18 |
| 2018 | 6 | 8 |
| 2019 | 8 | 10 |
| 2020 | 9 | 7 |
| 2021 | 8 | 6 |
| 2022 | 10 | 2 |
| 2023 | 6 | 10 |
| 2024 | 4 | 6 |
| 2025 | 3 | 1 |
| 2026 | 2 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Suction liner and centrifugal pump comprising the same2 Jun 2026US 12,644,470 B2Metso Sweden AB
- Centrifugal pump impeller with tapered shroud13 Jan 2026US 12,523,235 B2Weir Minerals Australia Ltd.
- Radial continuous-flow machine with cooling and lubrication by way of a medium which flows through the machine24 Jun 2025US 12,338,833 B2Hella GmbH & Co. KGaA
- Centrifugal pump for conveying media containing solids17 Jun 2025US 12,331,757 B2KSB SE & Co. KGaA
- Motor assembly and a cleaner comprising the same22 Apr 2025US 12,279,739 B2Samsung Electronics Co., Ltd.
- Pump system30 Jul 2026US 2026/0218719 A1Pentair Flow Technologies, LLC
- Submergible Multistage Pump16 Jul 2026US 2026/0201888 A1Xylem Europe GmbH
- Magnetic levitation type pump11 Jun 2026US 2026/0160260 A1Pillar Corporation
- Fluid pump with inlet seal device11 Jun 2026US 2026/0160261 A1
- Motor pump14 May 2026US 2026/0132798 A1Ebara Corporation
Most cited
By later US patents
- Pump impeller seals with spiral grooves127US 4,242,039 AL Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude · 1980
- Split ring seal of a centrifugal pump122US 4,867,638 AAlbert Handtmann Elteka GmbH & Co. KG · 1989
- High speed whirlpool pump121US 5,156,535 AITT Corporation · 1992
- Centrifugal pump with hydraulic thrust balance and tandem axial seals79US 4,867,633 ASundstrand Corporation · 1989
- Downthrust pads for submersible centrifugal pumps44US 6,106,224 ACamco International Inc. · 2000