F16F 9/532
Electrorheological [er] fluid dampers
Official title: {Electrorheological [ER] fluid dampers}
F16F9/532 (Electrorheological [er] fluid dampers) appears on 106 US grants and 69 published applications in this corpus.
Search patents in F16F- Granted patents
- 106
- Published applications
- 69
- Assignees
- 68
- Inventors
- 233
- Latest grant
- 29 Apr 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 8 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 7 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 1 |
| 2003 | 0 | 4 |
| 2004 | 5 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 6 |
| 2011 | 1 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 2 | 2 |
| 2015 | 3 | 2 |
| 2016 | 1 | 6 |
| 2017 | 7 | 2 |
| 2018 | 1 | 7 |
| 2019 | 2 | 3 |
| 2020 | 5 | 12 |
| 2021 | 4 | 5 |
| 2022 | 6 | 4 |
| 2023 | 4 | 6 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Damping arrangement for vibration damping of an element in an optical system29 Apr 2025US 12,287,587 B2Carl Zeiss SMT GmbH
- Damper device9 Apr 2024US 11,953,075 B2Hitachi Astemo, Ltd.
- Hydraulic fluid flow control5 Mar 2024US 11,920,615 B2Goodrich Corporation
- Squeeze mode giant electrorheological fluid damper7 Nov 2023US 11,808,317 B2Shanghai University
- Hydraulic fluid flow control17 Oct 2023US 11,788,561 B2Goodrich Corporation
- Electro-rheological fluid and cylinder device using same5 Dec 2024US 2024/0400931 A1Hitachi Astemo, Ltd.
- Hydraulic fluid flow control19 Oct 2023US 2023/0332627 A1Goodrich Corporation
- Electrical controller for force dampers6 Jul 2023US 2023/0213082 A1Virginia Tech Intellectual Properties, Inc.
- Electroviscous fluid and cylinder device25 May 2023US 2023/0159847 A1Hitachi Astemo, Ltd.
- Damping arrangement for vibration damping of an element in an optical system6 Apr 2023US 2023/0104921 A1Carl Zeiss SMT GmbH
Most cited
By later US patents
- Electro-rheological shock absorber150US 5,161,653 A1992
- Adjustable dampers using electrorheological fluids138US 5,259,487 AThe Lubrizol Corporation · 1993
- Electroviscous liquid-filled suspension device and control damping device therefor122US 4,858,733 ABridgestone Corporation · 1989
- Vibration attenuating method utilizing continuously variable semiactive damper111US 4,887,699 ALord Corporation · 1989
- Electro-rheological fluid brake and actuator devices and orthotic devices using the same98US 8,142,370 B2Northeastern University · 2012