F04D 29/628
Especially adapted for liquid pumps
Official title: {especially adapted for liquid pumps}
F04D29/628 (Especially adapted for liquid pumps) appears on 669 US grants and 696 published applications in this corpus.
Search patents in F04D- Granted patents
- 669
- Published applications
- 696
- Assignees
- 394
- Inventors
- 1,462
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 11 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 11 | 0 |
| 1999 | 6 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 1 |
| 2002 | 9 | 4 |
| 2003 | 2 | 12 |
| 2004 | 11 | 9 |
| 2005 | 8 | 22 |
| 2006 | 7 | 11 |
| 2007 | 6 | 13 |
| 2008 | 5 | 18 |
| 2009 | 2 | 15 |
| 2010 | 11 | 18 |
| 2011 | 13 | 24 |
| 2012 | 15 | 12 |
| 2013 | 12 | 15 |
| 2014 | 16 | 36 |
| 2015 | 24 | 36 |
| 2016 | 18 | 34 |
| 2017 | 33 | 47 |
| 2018 | 25 | 34 |
| 2019 | 40 | 37 |
| 2020 | 34 | 48 |
| 2021 | 39 | 47 |
| 2022 | 46 | 41 |
| 2023 | 42 | 43 |
| 2024 | 45 | 42 |
| 2025 | 36 | 40 |
| 2026 | 32 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Liquid hydrogen pump impellor assembly6 Oct 2026US 12,753,770 B2ROLLS-ROYCE plc
- Pump diffuser anti-rotation and alignment assembly6 Oct 2026US 12,753,774 B2Pentair Flow Technologies, LLC
- Stick pump assembly1 Sep 2026US 12,723,590 B2Milwaukee Electric Tool Corporation
- Split thrust chamber for downhole pump25 Aug 2026US 12,716,417 B2Halliburton Energy Services.Inc.
- Pump unit for a centrifugal pump and centrifugal pump25 Aug 2026US 12,716,422 B2Levitronix LLC
- Submersible pump with stage erosion control17 Sep 2026US 2026/0275989 A1Schlumberger Technology Corporation
- Electric submersible pump housing with torque-resisting feature6 Aug 2026US 2026/0229950 A1Halliburton Energy Services.Inc.
- Stator assembly for micro-axial pump6 Aug 2026US 2026/0231360 A1Hewlett Packard Enterprise Development LP
- Encapsulant retaining wrap for micro-axial pump6 Aug 2026US 2026/0231365 A1Hewlett Packard Enterprise Development LP
- Pump system30 Jul 2026US 2026/0218719 A1Pentair Flow Technologies, LLC
Most cited
By later US patents
- Blood pump with sterile motor housing265US 6,210,133 B1A-Med Systems, Inc. · 2001
- Blood pump with disposable rotor assembly246US 5,393,207 ANimbus, Inc. · 1995
- Blood pump drive system221US 5,147,186 ABio-Medicus, Inc. · 1992
- Blood pump with turbine drive197US 6,152,704 AA-Med Systems, Inc. · 2000
- Blood pump drive system194US 5,021,048 AMedtronic, Inc. · 1991