F04D 13/027
Details of the magnetic circuit
Official title: {Details of the magnetic circuit}
F04D13/027 (Details of the magnetic circuit) appears on 224 US grants and 195 published applications in this corpus.
Search patents in F04D- Granted patents
- 224
- Published applications
- 195
- Assignees
- 152
- Inventors
- 391
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 3 |
| 2002 | 4 | 5 |
| 2003 | 5 | 1 |
| 2004 | 3 | 5 |
| 2005 | 4 | 8 |
| 2006 | 3 | 5 |
| 2007 | 2 | 5 |
| 2008 | 3 | 6 |
| 2009 | 4 | 8 |
| 2010 | 5 | 9 |
| 2011 | 4 | 14 |
| 2012 | 7 | 6 |
| 2013 | 6 | 8 |
| 2014 | 11 | 9 |
| 2015 | 6 | 2 |
| 2016 | 4 | 9 |
| 2017 | 5 | 7 |
| 2018 | 8 | 7 |
| 2019 | 8 | 8 |
| 2020 | 6 | 7 |
| 2021 | 7 | 11 |
| 2022 | 7 | 17 |
| 2023 | 14 | 9 |
| 2024 | 13 | 8 |
| 2025 | 11 | 13 |
| 2026 | 8 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Motor assembly for an appliance such as a vacuum cleaner and a vacuum cleaner having same15 Sep 2026US 12,736,058 B2Omachron Intellectual Property Inc.
- Liquid supply device with function of reducing generation of particles25 Aug 2026US 12,716,416 B2Samsung Electronics Co., Ltd.
- Pump unit for a centrifugal pump and a centrifugal pump18 Aug 2026US 12,710,049 B2Levitronix LLC
- Magnetic fluid pump assembly for aquarium14 Jul 2026US 12,680,547 B2EcoTech, LLC
- Fluid delivery system health monitoring systems and methods7 Jul 2026US 12,674,459 B2Oshkosh Corporation
- Scalable multi-stage magnetic levitation molten salt pump1 Oct 2026US 2026/0298245 A1Lanzhou University of Technology
- Fluid delivery system health monitoring systems and methods1 Oct 2026US 2026/0298249 A1Oshkosh Corporation
- Device to assist the performance of a heart18 Jun 2026US 2026/0168497 A1Miracor Medical SA
- Magnetic levitation type pump11 Jun 2026US 2026/0160260 A1Pillar Corporation
- Liquid supply device with function of reducing generation of particles30 Apr 2026US 2026/0117779 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Blood pump without bearing222US 6,623,475 B1Impella CardioSystems AG · 2003
- Blood pump drive system221US 5,147,186 ABio-Medicus, Inc. · 1992
- Centrifugal blood pump with impeller212US 4,589,822 AMICI Limited Partnership IV · 1986
- Blood pump with turbine drive197US 6,152,704 AA-Med Systems, Inc. · 2000
- Centrifugal blood pump assembly190US 5,947,703 ANtn Corporation · 1999