F04D 29/688
Especially adapted for liquid pumps
Official title: {especially adapted for liquid pumps}
F04D29/688 (Especially adapted for liquid pumps) appears on 52 US grants and 47 published applications in this corpus.
Search patents in F04D- Granted patents
- 52
- Published applications
- 47
- Assignees
- 46
- Inventors
- 116
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 3 |
| 2004 | 2 | 1 |
| 2005 | 1 | 4 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 6 |
| 2014 | 0 | 2 |
| 2015 | 2 | 3 |
| 2016 | 2 | 2 |
| 2017 | 4 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 3 |
| 2020 | 4 | 0 |
| 2021 | 1 | 5 |
| 2022 | 3 | 2 |
| 2023 | 2 | 1 |
| 2024 | 3 | 2 |
| 2025 | 3 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cleaning system used for vehicles and capable of suppressing vibrations and reducing noise10 Mar 2026US 12,571,388 B2Ningbo Hengshuai Co., Ltd.
- Floating counter-rotating vortex-eliminating device for pump station, and pump station12 Aug 2025US 12,385,504 B2Jiangsu University
- Short impeller for a turbomachine8 Jul 2025US 12,352,290 B2OneSubsea IP UK Limited
- Centrifugal pump and a pump housing7 Jan 2025US 12,188,475 B2Levitronix LLC
- Blood pump28 May 2024US 11,992,670 B2Resuscitec GmbH
- Slurry pump28 May 2026US 2026/0146627 A1
- Cleaning system used for vehicles and capable of suppressing vibrations and reducing noise29 Jan 2026US 2026/0028980 A1Ningbo Hengshuai Co., Ltd.
- Floating counter-rotating vortex-eliminating device for pump station, and pump station24 Jul 2025US 2025/0237237 A1Jiangsu University
- Short impeller for a turbomachine12 Dec 2024US 2024/0410397 A1OneSubsea IP UK Limited
- Slurry pump9 May 2024US 2024/0151241 A1Metso Outotec Sweden AB
Most cited
By later US patents
- Roto-dynamic pump with a backflow recirculator149US 4,375,937 AIngersoll-Rand Company · 1983
- Turbomachine70US 5,707,206 AEbara Corporation · 1998
- Pump delivery flow rate control apparatus51US 5,213,477 AKabushiki Kaisha Toshiba · 1993
- Surface of a body exposed to circumfluent fluid41US 5,860,626 A1999
- Idler disk35US 5,106,262 A1992