F16F 2228/00
Functional characteristics
Official title: Functional characteristics, e.g. variability, frequency-dependence
F16F2228/00 (Functional characteristics) appears on 1,078 US grants and 1,399 published applications in this corpus.
Search patents in F16F- Granted patents
- 1,078
- Published applications
- 1,399
- Assignees
- 603
- Inventors
- 2,574
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 8 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 3 |
| 2003 | 2 | 9 |
| 2004 | 2 | 4 |
| 2005 | 2 | 7 |
| 2006 | 5 | 10 |
| 2007 | 6 | 4 |
| 2008 | 5 | 13 |
| 2009 | 4 | 6 |
| 2010 | 8 | 9 |
| 2011 | 6 | 10 |
| 2012 | 6 | 15 |
| 2013 | 5 | 9 |
| 2014 | 9 | 14 |
| 2015 | 19 | 28 |
| 2016 | 21 | 41 |
| 2017 | 32 | 72 |
| 2018 | 49 | 109 |
| 2019 | 86 | 132 |
| 2020 | 115 | 158 |
| 2021 | 77 | 166 |
| 2022 | 131 | 140 |
| 2023 | 126 | 153 |
| 2024 | 129 | 117 |
| 2025 | 105 | 99 |
| 2026 | 74 | 70 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F16F 2228/06StiffnessIndexing code682
- F16F 2228/001Specific functional characteristics in numerical form or in the form of equationsIndexing code176
- F16F 2228/08Pre-stressedIndexing code149
- F16F 2228/04Frequency effectsIndexing code101
- F16F 2228/14ProgressiveIndexing code28
- F16F 2228/10Functional characteristics: with threshold or dead zoneIndexing code22
- F16F 2228/12DegressiveIndexing code9
Recent patents
- Zero Poisson's ratio structure and a planar structure of zero Poisson's ratio in which the structure is matrixed in a plane6 Oct 2026US 12,753,819 B2Research & Business Foundation Sungkyunkwan University
- Active crew seat vibration control6 Oct 2026US 12,753,823 B2Lockheed Martin Corporation
- Controlled damper with proportional valve and cross-flow bypass sleeve29 Sep 2026US 12,747,769 B2Beijingwest Industries Co., Ltd.
- Systems for damping a solar photovoltaic array tracker22 Sep 2026US 12,744,492 B2FTC Solar, Inc.
- Hand-held electrically powered disc cutter with specific mass ratios15 Sep 2026US 12,734,727 B2Husqvarna AB
- Vibration damper, motor vehicle and method for filling8 Oct 2026US 2026/0309202 A1thyssenkrupp AG
- Damper device8 Oct 2026US 2026/0309204 A1Thk Co., Ltd.
- Telescopic Tube Assembly with Idle Stroke and Integrated Damper8 Oct 2026US 2026/0309205 A1
- Compact torsional spring system1 Oct 2026US 2026/0298302 A1Massachusetts Institute of Technology
- Shock-absorber cylinder having an adjustable length and/or shock-absorbing effect1 Oct 2026US 2026/0298306 A1Airbus Operations GmbH
Most cited
By later US patents
- Automatic self-injection device555US 5,478,316 ABecton, Dickinson and Company · 1995
- Suspension damper with remotely-operable valve147US 9,239,090 B2Fox Factory, Inc. · 2016
- Integrated and self-contained suspension assembly having an on-the-fly adjustable air spring139US 7,703,585 B2Fox Factory, Inc. · 2010
- Hydraulic shock absorber138US 5,248,014 ATokico Ltd. · 1993
- Controllable vibration apparatus131US 5,878,851 ALord Corporation · 1999