F04D 13/021
Containing a coupling
Official title: {containing a coupling}
F04D13/021 (Containing a coupling) appears on 812 US grants and 783 published applications in this corpus.
Search patents in F04D- Granted patents
- 812
- Published applications
- 783
- Assignees
- 482
- Inventors
- 1,547
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 5 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 16 | 0 |
| 1990 | 6 | 0 |
| 1991 | 13 | 0 |
| 1992 | 14 | 0 |
| 1993 | 8 | 0 |
| 1994 | 16 | 0 |
| 1995 | 12 | 0 |
| 1996 | 15 | 0 |
| 1997 | 11 | 0 |
| 1998 | 14 | 0 |
| 1999 | 14 | 0 |
| 2000 | 15 | 0 |
| 2001 | 15 | 6 |
| 2002 | 12 | 17 |
| 2003 | 15 | 5 |
| 2004 | 11 | 19 |
| 2005 | 8 | 26 |
| 2006 | 15 | 17 |
| 2007 | 8 | 16 |
| 2008 | 6 | 19 |
| 2009 | 13 | 19 |
| 2010 | 12 | 19 |
| 2011 | 15 | 29 |
| 2012 | 16 | 20 |
| 2013 | 18 | 28 |
| 2014 | 21 | 43 |
| 2015 | 20 | 37 |
| 2016 | 20 | 49 |
| 2017 | 29 | 37 |
| 2018 | 32 | 49 |
| 2019 | 53 | 42 |
| 2020 | 41 | 45 |
| 2021 | 32 | 55 |
| 2022 | 37 | 49 |
| 2023 | 44 | 43 |
| 2024 | 39 | 28 |
| 2025 | 46 | 35 |
| 2026 | 25 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-occluding intravascular blood pump providing reduced hemolysis15 Sep 2026US 12,736,054 B2Procyrion, Inc.
- 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
- Electric coolant pump with expansion compensating seal18 Aug 2026US 12,710,051 B2Multi Parts Supply USA, Inc.
- 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
- Magnetic levitation device and pump unit10 Sep 2026US 2026/0266292 A1Levitronix LLC
- Impeller of a pump, and pump6 Aug 2026US 2026/0226910 A1Rheinisch-Westfalische Technische Hochschule Aachen, Abgektirzt RWTH Aachen Korperschaft des dffe
- Oil pan for internal combustion engine9 Jul 2026US 2026/0194004 A1Arctic Cat Inc.
Most cited
By later US patents
- Surgical irrigation apparatus and methods for use502US 6,162,194 AApollo Camera, LLC · 2000
- Centrifugal blood pump for cardiac assist307US 4,135,253 AMedtronic, Inc. · 1979
- Fluid motor driven blood pump236US 5,145,333 AThe Cleveland Clinic Foundation · 1992
- Blood pump without bearing222US 6,623,475 B1Impella CardioSystems AG · 2003
- Blood pump drive system221US 5,147,186 ABio-Medicus, Inc. · 1992