F04C 29/0064
Magnetic couplings
Official title: {Magnetic couplings}
F04C29/0064 (Magnetic couplings) appears on 54 US grants and 65 published applications in this corpus.
Search patents in F04C- Granted patents
- 54
- Published applications
- 65
- Assignees
- 43
- Inventors
- 122
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 0 | 3 |
| 2003 | 4 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 1 | 4 |
| 2008 | 1 | 2 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 6 |
| 2012 | 2 | 3 |
| 2013 | 3 | 5 |
| 2014 | 6 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 3 |
| 2017 | 2 | 6 |
| 2018 | 3 | 6 |
| 2019 | 5 | 1 |
| 2020 | 1 | 4 |
| 2021 | 2 | 2 |
| 2022 | 2 | 1 |
| 2023 | 1 | 2 |
| 2024 | 4 | 4 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Electric pump2 Dec 2025US 12,486,847 B2Shinano Kenshi Co., Ltd.
- Air gap magnetic coupling with thermal isolation28 Oct 2025US 12,456,907 B2Agilent Technologies, Inc.
- Turbomachine provided with a magnetic drive pump14 Oct 2025US 12,442,385 B2Safran Helicopter Engines
- Surface driven downhole pump system12 Nov 2024US 12,140,136 B2Saudi Arabian Oil Company
- Scroll compressor and method for operating the scroll compressor5 Nov 2024US 12,135,028 B2Robert Bosch GmbH
- Methods and systems for sealing rotating equipment such as expanders or compressors27 Mar 2025US 2025/0102067 A1
- Air gap magnetic coupling with thermal isolation5 Dec 2024US 2024/0405653 A1Agilent Technologies, Inc.
- Electric pump22 Aug 2024US 2024/0280106 A1Shinano Kenshi Co., Ltd.
- Scroll compressor and method for operating the scroll compressor4 Jul 2024US 2024/0218875 A1Robert Bosch GmbH
- Turbomachine provided with a magnetic drive pump2 May 2024US 2024/0141911 A1Safran Helicopter Engines
Most cited
By later US patents
- Hysteresis magnet coupling for roots type pumps49US 5,215,501 ANGK Insulators, Ltd. · 1993
- Double wrap dry scroll vacuum pump having a compressed gas cooling passage disposed in the scroll shaft44US 6,149,405 AAnest Iwata Corporation · 2000
- Dynamotor driven compressor and method for controlling the same41US 6,939,114 B2Denso Corporation · 2005
- Sealed rotary compressor35US 4,674,960 ASpectra-Physics, Inc. · 1987
- Three stage scroll vacuum pump34US 9,028,230 B2Air Squared, Inc. · 2015