F04D 29/0413
Hydrostatic
Official title: {hydrostatic; hydrodynamic thrust bearings}
F04D29/0413 (Hydrostatic) appears on 359 US grants and 312 published applications in this corpus.
Search patents in F04D- Granted patents
- 359
- Published applications
- 312
- Assignees
- 214
- Inventors
- 691
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 8 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 10 | 0 |
| 1995 | 3 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 13 | 0 |
| 2001 | 9 | 1 |
| 2002 | 3 | 3 |
| 2003 | 6 | 0 |
| 2004 | 2 | 3 |
| 2005 | 2 | 7 |
| 2006 | 2 | 6 |
| 2007 | 4 | 5 |
| 2008 | 4 | 16 |
| 2009 | 1 | 5 |
| 2010 | 8 | 4 |
| 2011 | 5 | 7 |
| 2012 | 6 | 6 |
| 2013 | 3 | 5 |
| 2014 | 10 | 13 |
| 2015 | 7 | 24 |
| 2016 | 7 | 19 |
| 2017 | 19 | 32 |
| 2018 | 18 | 27 |
| 2019 | 27 | 19 |
| 2020 | 23 | 22 |
| 2021 | 18 | 22 |
| 2022 | 21 | 19 |
| 2023 | 19 | 10 |
| 2024 | 15 | 11 |
| 2025 | 13 | 11 |
| 2026 | 9 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Split thrust chamber for downhole pump25 Aug 2026US 12,716,417 B2Halliburton Energy Services.Inc.
- Centrifugal pump18 Aug 2026US 12,710,048 B2Sulzer Management AG
- Electric motor-integrated rocket engine pump21 Jul 2026US 12,687,169 B2Industry-University Cooperation Foundation Hanyang University Erica Campus
- Magnetic fluid pump assembly for aquarium14 Jul 2026US 12,680,547 B2EcoTech, LLC
- Rotor for electric water pumps and sliding bearing device for water pumps7 Jul 2026US 12,674,464 B2Ntn Corporation
- Liquid transfer pump30 Jul 2026US 2026/0218708 A1Zhejiang Ele Smart Technology Co., Ltd.
- Vortex slurry pump23 Jul 2026US 2026/0210362 A1
- System and method for handling thrust loads in axial flow pump23 Jul 2026US 2026/0210372 A1Schlumberger Technology Corporation
- Thrust bearings to support axial thrust in pumps2 Jul 2026US 2026/0185463 A1General Electric Company
- Bearing assemblies, apparatuses, devices, systems, and methods including bearings18 Jun 2026US 2026/0168507 A1ChampionX LLC
Most cited
By later US patents
- Percutaneous axial flow blood pump422US 4,944,722 ANimbus Medical, Inc. · 1990
- Axial flow blood pump with hydrodynamically suspended rotor386US 5,211,546 ANu-Tech Industries, Inc. · 1993
- Implantable electric axial-flow blood pump344US 5,588,812 ANimbus, Inc. · 1996
- Sealless rotodynamic pump with fluid bearing280US 5,370,509 AThe Cleveland Clinic Foundation · 1994
- Sealless heart pump248US 5,049,134 AThe Cleveland Clinic Foundation · 1991