F16F 2228/063
Negative stiffness
F16F2228/063 (Negative stiffness) appears on 88 US grants and 94 published applications in this corpus.
Search patents in F16F- Granted patents
- 88
- Published applications
- 94
- Assignees
- 71
- Inventors
- 220
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 3 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 4 |
| 2015 | 2 | 7 |
| 2016 | 4 | 5 |
| 2017 | 8 | 3 |
| 2018 | 6 | 7 |
| 2019 | 9 | 5 |
| 2020 | 4 | 3 |
| 2021 | 1 | 13 |
| 2022 | 6 | 13 |
| 2023 | 13 | 6 |
| 2024 | 10 | 9 |
| 2025 | 10 | 7 |
| 2026 | 6 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Structure16 Jun 2026US 12,655,881 B2Nature Architects Inc.
- Vibration control systems16 Jun 2026US 12,655,883 B2BAE SYSTEMS plc
- Multidirectional hysteretic damper endowed with negative stiffness19 May 2026US 12,631,041 B2Universita' Degli Studi Di Roma “La Sapienza”
- Multi-degree anti-vibration unit12 May 2026US 12,624,742 B2City University of Hong Kong
- System and projection exposure apparatus10 Feb 2026US 12,547,085 B2Carl Zeiss SMT GmbH
- Damper device8 Oct 2026US 2026/0309204 A1Thk Co., Ltd.
- Torsional vibration isolated coupling element4 Jun 2026US 2026/0153131 A1Hasse & Wrede GmbH
- Low-frequency tuned mass damping device with reverse-stretched compression springs21 May 2026US 2026/0139719 A1Dalian University of Technology
- Reverse force mechanism30 Apr 2026US 2026/0117835 A1Meidensha Corporation
- Compliant constant-stiffness mechanism, hinge assembly, and terminal device12 Mar 2026US 2026/0071474 A1Honor Device Co., Ltd.
Most cited
By later US patents
- Vibration isolation system76US 5,310,157 AMinus K. Technology, Inc. · 1994
- Vibration isolation system53US 5,178,357 A1993
- Damped vibration isolation system37US 5,370,352 AMinus K. Technology, Inc. · 1994
- Vibration isolation system30US 5,390,892 AMinus K. Technology, Inc. · 1995
- Vibration isolator mechanism with adjustable force application mechanism28US 10,677,310 B2Toyota Motor Engineering & Manufacturing North America, Inc. · 2020