F16C 33/6644
By a magnetic field acting on a magnetic liquid
Official title: {by a magnetic field acting on a magnetic liquid}
F16C33/6644 (By a magnetic field acting on a magnetic liquid) appears on 16 US grants and 12 published applications in this corpus.
Search patents in F16C- Granted patents
- 16
- Published applications
- 12
- Assignees
- 12
- Inventors
- 28
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 3 |
| 2015 | 1 | 4 |
| 2016 | 2 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Drive module for a motor vehicle30 Dec 2025US 12,508,839 B2ZF Friedrichshafen AG
- Magnetic liquid sealing device adapted to axial and radial displacements of connection4 Jan 2022US 11,215,286 B2Tsinghua University
- Fishing reel30 Jan 2018US 9,877,467 B2Globeride, Inc.
- Semi-active isolators based on magnetorheological nanocomposites28 Feb 2017US 9,581,214 B2The Regents of the University of California
- Pivot assembly bearing device and magnetic head actuator using the same18 Oct 2016US 9,470,268 B2Minebea Co., Ltd.
- Drive Module for a Motor Vehicle13 Jun 2024US 2024/0190175 A1ZF Friedrichshafen AG
- Magnetic liquid sealing device adapted to axial and radial displacements of connection3 Sep 2020US 2020/0278031 A1Tsinghua University
- Seal device employing magnetic fluid28 Sep 2017US 2017/0276178 A1Eagle Industry Co., Ltd.
- Fishing reel27 Oct 2016US 2016/0309689 A1Globeride, Inc.
- Bearing mechanism and transfer device5 Nov 2015US 2015/0316098 A1Tokyo Electron Limited
Most cited
By later US patents
- Compact ferrofluidic electrically conducting sealed bearing37US 4,898,480 AFerrofluidics Corporation · 1990
- Magnetic ball bearing assembly using ferrolubricants35US 3,977,739 AFerrofluidics Corporation · 1976
- Compact ferrofluidic electrically conducting sealed bearing22US 4,797,013 AFerrofluidics Corporation · 1989
- Rotation transmitting device17US 6,119,553 AHarmonic Drive Systems Inc. · 2000
- Bearing cartridge assembly14US 4,043,616 A1977