F04D 29/468
Adjusting flow cross-section, otherwise than by using adjustable stator blades
Official title: {adjusting flow cross-section, otherwise than by using adjustable stator blades}
F04D29/468 (Adjusting flow cross-section, otherwise than by using adjustable stator blades) appears on 23 US grants and 20 published applications in this corpus.
Search patents in F04D- Granted patents
- 23
- Published applications
- 20
- Assignees
- 16
- Inventors
- 39
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 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 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 2 | 4 |
| 2021 | 3 | 3 |
| 2022 | 4 | 1 |
| 2023 | 2 | 2 |
| 2024 | 2 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for pump control based on pump vibrations27 Jan 2026US 12,535,086 B2S.P.M. Instrument AB
- Multiport fluid pump with integrated valve13 May 2025US 12,297,843 B2Cooper-Standard Automotive Inc.
- Variable mechanical automotive coolant pump25 Jun 2024US 12,018,690 B2Pierburg Pump Technology GmbH
- Clothes treating apparatus26 Mar 2024US 11,939,716 B2LG Electronics Inc.
- Adaptive volutes for centrifugal pumps25 Jul 2023US 11,708,841 B2Massachusetts Institute of Technology
- Multiport fluid pump with integrated valve11 Jun 2026US 2026/0160264 A1Cooper-Standard Automotive Inc.
- System and method for monitoring pump vibrations24 Jul 2025US 2025/0237227 A1S.P.M. Instrument AB
- System and method for pump control based on pump vibrations26 Sep 2024US 2024/0318667 A1S.P.M. Instrument AB
- Multiport fluid pump with integrated valve14 Dec 2023US 2023/0400037 A1Cooper-Standard Automotive Inc.
- Variable mechanical automotive coolant pump9 Nov 2023US 2023/0358239 A1Pierburg Pump Technology GmbH
Most cited
By later US patents
- Centrifugal pump having a housing and a volute casing wherein the volute casing has a tear-drop shaped inner wall defined by a circular body region and a converging apex with the inner wall comprising a blocker below at least one perimeter end of one diffuser blade34US 11,193,504 B1Aquastar Pool Products, Inc. · 2021
- Adjustable centrifugal pump34US 4,643,639 ASundstrand Corporation · 1987
- Centrifugal pump with self-regulating impeller discharge shutter25US 4,802,817 ASundstrand Corporation · 1989
- Centrifugal pump with adaptive pump stages15US 11,268,520 B2Saudi Arabian Oil Company · 2022
- Electric submersible pump (ESP) with gas handling shroud inlet12US 11,149,535 B2Halliburton Energy Services.Inc. · 2021