F16F 13/30
Comprising means for varying fluid viscosity
Official title: comprising means for varying fluid viscosity, e.g. of magnetic or electrorheological fluids
F16F13/30 (Comprising means for varying fluid viscosity) appears on 107 US grants and 71 published applications in this corpus.
Search patents in F16F- Granted patents
- 107
- Published applications
- 71
- Assignees
- 39
- Inventors
- 181
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 11 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 2 |
| 2003 | 2 | 3 |
| 2004 | 1 | 1 |
| 2005 | 1 | 4 |
| 2006 | 3 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 1 | 4 |
| 2010 | 1 | 2 |
| 2011 | 2 | 0 |
| 2012 | 2 | 3 |
| 2013 | 2 | 4 |
| 2014 | 3 | 6 |
| 2015 | 6 | 3 |
| 2016 | 4 | 0 |
| 2017 | 2 | 4 |
| 2018 | 3 | 4 |
| 2019 | 0 | 5 |
| 2020 | 5 | 11 |
| 2021 | 6 | 3 |
| 2022 | 9 | 2 |
| 2023 | 2 | 3 |
| 2024 | 0 | 0 |
| 2025 | 1 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Noise elimination and vibration damping device for air compressor and air compressor21 Apr 2026US 12,607,204 B2Jiangsu Easyland Automotive Corporation
- Vibration damping device6 Jan 2026US 12,515,510 B2Sumitomo Riko Company Limited
- Fluid-filled vibration damping device29 Jul 2025US 12,370,878 B2Sumitomo Riko Company Limited
- Mount bush19 Sep 2023US 11,761,511 B2Honda Motor Co., Ltd.
- Systems and methods for mounting a propulsion device with respect to a marine vessel11 Apr 2023US 11,623,720 B1Brunswick Corporation
- Active vibration damping device18 Sep 2025US 2025/0290556 A1Honda Motor Co., Ltd.
- Noise elimination and vibration damping device for air compressor and air compressor11 Sep 2025US 2025/0283485 A1Jiangsu Easyland Automotive Corporation
- Vibration damping device28 Dec 2023US 2023/0415559 A1Sumitomo Riko Company Limited
- Fluid-filled cylindrical vibration damping device21 Dec 2023US 2023/0407940 A1Sumitomo Riko Company Limited
- Fluid-filled vibration damping device7 Sep 2023US 2023/0278413 A1Sumitomo Riko Company Limited
Most cited
By later US patents
- Magnetorheological fluid devices267US 5,284,330 ALord Corporation · 1994
- Magnetorheological fluid dampers244US 5,277,281 ALord Corporation · 1994
- Electroviscous liquid-filled suspension device and control damping device therefor122US 4,858,733 ABridgestone Corporation · 1989
- Two-way magnetorheological fluid valve assembly and devices utilizing same106US 6,095,486 ALord Corporation · 2000
- Magnetorheological fluid devices98US 5,398,917 ALord Corporation · 1995