A61F 2002/30568
Multiple spring systems including two or more helical springs
Official title: {Multiple spring systems including two or more helical springs}
A61F2002/30568 (Multiple spring systems including two or more helical springs) appears on 109 US grants and 132 published applications in this corpus.
Search patents in A61F- Granted patents
- 109
- Published applications
- 132
- Assignees
- 46
- Inventors
- 131
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 5 |
| 2003 | 4 | 0 |
| 2004 | 0 | 7 |
| 2005 | 1 | 10 |
| 2006 | 2 | 8 |
| 2007 | 5 | 5 |
| 2008 | 0 | 4 |
| 2009 | 4 | 4 |
| 2010 | 4 | 5 |
| 2011 | 5 | 5 |
| 2012 | 4 | 8 |
| 2013 | 7 | 3 |
| 2014 | 2 | 8 |
| 2015 | 6 | 3 |
| 2016 | 4 | 5 |
| 2017 | 7 | 7 |
| 2018 | 3 | 2 |
| 2019 | 7 | 9 |
| 2020 | 3 | 6 |
| 2021 | 7 | 7 |
| 2022 | 8 | 6 |
| 2023 | 2 | 4 |
| 2024 | 4 | 4 |
| 2025 | 4 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Interbody spinal cage31 Mar 2026US 12,589,005 B2
- Extra-articular implantable mechanical energy absorbing systems24 Feb 2026US 12,558,226 B2Moximed, Inc.
- Responsive biomechanical implants and devices14 Oct 2025US 12,440,340 B2Newtonoid Technologies, L.L.C.
- Vertebral prosthesis12 Aug 2025US 12,383,409 B2
- Porous interbody spacer22 Apr 2025US 12,279,967 B2Nexus Spine, LLC
- Interbody spinal cage9 Jul 2026US 2026/0191658 A1
- Porous interbody spacer9 Apr 2026US 2026/0096904 A1Nexus Spine, LLC
- Responsive Biomechanical Implants and Devices28 Aug 2025US 2025/0268716 A1Newtonoid Technologies, L.L.C.
- Systems and methods for flexure-based standalone interbody fusion28 Aug 2025US 2025/0268723 A1Nexus Spine, LLC
- Apparatus and method for joint characterization and treatment24 Jul 2025US 2025/0235320 A1Dynamic Balancer Systems LLC
Most cited
By later US patents
- Artificial spinal prosthesis1,218US 5,123,926 A1992
- Artificial spinal disc1,110US 4,759,769 AHealth & Research Services Inc. · 1988
- Spinal fusion implant and method of insertion thereof1,008US 5,782,832 ASurgical Dynamics, Inc. · 1998
- Artificial intervertebral disc993US 4,309,777 A1982
- Surgically implanting threaded fusion cages between adjacent low-back vertebrae by an anterior approach813US 5,055,104 ASurgical Dynamics, Inc. · 1991