F04D 29/047
Hydrostatic
Official title: hydrostatic; hydrodynamic
F04D29/047 (Hydrostatic) appears on 517 US grants and 435 published applications in this corpus.
Search patents in F04D- Granted patents
- 517
- Published applications
- 435
- Assignees
- 290
- Inventors
- 926
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 14 | 0 |
| 1993 | 9 | 0 |
| 1994 | 11 | 0 |
| 1995 | 5 | 0 |
| 1996 | 10 | 0 |
| 1997 | 8 | 0 |
| 1998 | 6 | 0 |
| 1999 | 16 | 0 |
| 2000 | 13 | 0 |
| 2001 | 17 | 5 |
| 2002 | 5 | 5 |
| 2003 | 11 | 10 |
| 2004 | 8 | 11 |
| 2005 | 4 | 18 |
| 2006 | 7 | 10 |
| 2007 | 5 | 16 |
| 2008 | 9 | 16 |
| 2009 | 4 | 9 |
| 2010 | 7 | 13 |
| 2011 | 8 | 14 |
| 2012 | 9 | 13 |
| 2013 | 15 | 24 |
| 2014 | 18 | 27 |
| 2015 | 17 | 17 |
| 2016 | 17 | 24 |
| 2017 | 20 | 31 |
| 2018 | 19 | 35 |
| 2019 | 46 | 30 |
| 2020 | 36 | 23 |
| 2021 | 15 | 18 |
| 2022 | 16 | 22 |
| 2023 | 20 | 13 |
| 2024 | 16 | 10 |
| 2025 | 11 | 10 |
| 2026 | 12 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Centrifugal pump18 Aug 2026US 12,710,048 B2Sulzer Management AG
- Alternating pump gaps4 Aug 2026US 12,698,776 B2Tc1 LLC
- Rotor for electric water pumps and sliding bearing device for water pumps7 Jul 2026US 12,674,464 B2Ntn Corporation
- Electric submersible pump rotor assembly with hydrodynamic bearing30 Jun 2026US 12,669,041 B2Halliburton Energy Services.Inc.
- Thrust bearing with tilting pad2 Jun 2026US 12,644,365 B2Halliburton Energy Services.Inc.
- Oil pan for internal combustion engine9 Jul 2026US 2026/0194004 A1Arctic Cat Inc.
- Bearing assemblies, apparatuses, devices, systems, and methods including bearings18 Jun 2026US 2026/0168507 A1ChampionX LLC
- Rotor assembly of electronic water pump and electronic water pump18 Jun 2026US 2026/0168519 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Magnetic pump with inner magnetic wheel structure11 Jun 2026US 2026/0160254 A1Polyvane Corporation
- Magnetic levitation type pump11 Jun 2026US 2026/0160260 A1Pillar Corporation
Most cited
By later US patents
- Single-stage axial flow blood pump493US 4,846,152 ANimbus Medical, Inc. · 1989
- Percutaneous axial flow blood pump422US 4,944,722 ANimbus Medical, Inc. · 1990
- Rotary blood pump405US 6,234,772 B1Kriton Medical, Inc. · 2001
- Method and apparatus for cardiac blood flow assistance397US 5,911,685 AGuidant Corporation · 1999
- Method for providing a jewel bearing for supporting a pump rotor shaft388US 6,254,359 B1The United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 2001