F04D 29/445
Especially adapted for liquid pumps
Official title: {especially adapted for liquid pumps}
F04D29/445 (Especially adapted for liquid pumps) appears on 474 US grants and 401 published applications in this corpus.
Search patents in F04D- Granted patents
- 474
- Published applications
- 401
- Assignees
- 277
- Inventors
- 951
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 10 | 0 |
| 1990 | 3 | 0 |
| 1991 | 10 | 0 |
| 1992 | 17 | 0 |
| 1993 | 8 | 0 |
| 1994 | 14 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 5 | 0 |
| 1998 | 5 | 0 |
| 1999 | 12 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 3 |
| 2002 | 5 | 2 |
| 2003 | 5 | 9 |
| 2004 | 8 | 6 |
| 2005 | 3 | 2 |
| 2006 | 2 | 3 |
| 2007 | 2 | 5 |
| 2008 | 2 | 9 |
| 2009 | 3 | 7 |
| 2010 | 4 | 13 |
| 2011 | 6 | 13 |
| 2012 | 4 | 15 |
| 2013 | 11 | 21 |
| 2014 | 12 | 16 |
| 2015 | 14 | 24 |
| 2016 | 11 | 17 |
| 2017 | 27 | 33 |
| 2018 | 8 | 20 |
| 2019 | 27 | 21 |
| 2020 | 21 | 18 |
| 2021 | 22 | 28 |
| 2022 | 22 | 19 |
| 2023 | 28 | 23 |
| 2024 | 38 | 35 |
| 2025 | 19 | 19 |
| 2026 | 23 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Pump diffuser anti-rotation and alignment assembly6 Oct 2026US 12,753,774 B2Pentair Flow Technologies, LLC
- Multiple blade rows for impeller and diffuser stages15 Sep 2026US 12,736,061 B2
- Water flow system for washer, and washer1 Sep 2026US 12,721,496 B2Ningbo Fotile Kitchen Ware Co., Ltd.
- Stick pump assembly1 Sep 2026US 12,723,590 B2Milwaukee Electric Tool Corporation
- Downhole centrifugal pumps including axial support features and related components and methods25 Aug 2026US 12,716,426 B1ChampionX LLC
- Spin-resistant diffuser for electric submersible pump1 Oct 2026US 2026/0298264 A1Halliburton Energy Services.Inc.
- Domestic dishwasher with a pump device and pump device for a water-carrying domestic appliance17 Sep 2026US 2026/0272260 A1BSH Hausgeräte GmbH
- Submersible pump with stage erosion control17 Sep 2026US 2026/0275989 A1Schlumberger Technology Corporation
- Pump and domestic appliance having such a pump17 Sep 2026US 2026/0276002 A1E. G. O. Elektro-Geratebau GmbH
- Domestic dishwasher comprising a pump device, and pump device for a water-conducting domestic appliance10 Sep 2026US 2026/0262913 A1BSH Hausgeräte GmbH
Most cited
By later US patents
- Blood pump with disposable rotor assembly246US 5,393,207 ANimbus, Inc. · 1995
- Mixed flow pump183US 6,692,318 B2The Penn State Research Foundation · 2004
- Fluid pump with magnetically levitated impeller173US 5,195,877 A1993
- Fluid pump with magnetically levitated impeller167US 5,470,208 A1995
- Turbo pump with magnetically supported impeller162US 5,112,202 ANtn Corporation · 1992