A61F 2/66
Feet
Official title: Feet; Ankle joints
A61F2/66 (Feet) appears on 970 US grants and 1,058 published applications in this corpus.
Search patents in A61F- Granted patents
- 970
- Published applications
- 1,058
- Assignees
- 310
- Inventors
- 1,401
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 9 | 0 |
| 1992 | 13 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 13 | 0 |
| 1996 | 18 | 0 |
| 1997 | 11 | 0 |
| 1998 | 21 | 0 |
| 1999 | 23 | 0 |
| 2000 | 21 | 0 |
| 2001 | 17 | 2 |
| 2002 | 17 | 24 |
| 2003 | 14 | 18 |
| 2004 | 24 | 31 |
| 2005 | 24 | 39 |
| 2006 | 14 | 38 |
| 2007 | 9 | 24 |
| 2008 | 16 | 30 |
| 2009 | 14 | 34 |
| 2010 | 25 | 26 |
| 2011 | 28 | 37 |
| 2012 | 23 | 39 |
| 2013 | 20 | 37 |
| 2014 | 40 | 49 |
| 2015 | 38 | 59 |
| 2016 | 31 | 53 |
| 2017 | 37 | 57 |
| 2018 | 49 | 64 |
| 2019 | 60 | 57 |
| 2020 | 59 | 67 |
| 2021 | 43 | 56 |
| 2022 | 40 | 64 |
| 2023 | 44 | 55 |
| 2024 | 28 | 31 |
| 2025 | 34 | 42 |
| 2026 | 28 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Powered-on passive knee prosthesis system6 Oct 2026US 12,751,839 B2Vanderbilt University
- Lanyard systems for prosthetic devices and related methods6 Oct 2026US 12,751,841 B2Click Holdings, LLC
- Systems and methods for an environment-aware predictive modeling framework for human-robot symbiotic walking6 Oct 2026US 12,755,410 B2Arizona Board of Regents on behalf of Arizona State University
- 3 degrees of freedom ankle prosthesis22 Sep 2026US 12,740,876 B2Ozyegin Universites!
- Height adjustable prosthesis pyramid connector15 Sep 2026US 12,734,050 B2Otto Bock Healthcare GmbH
- Unified controller for powered ankle assistive devices8 Oct 2026US 2026/0306341 A1
- Prosthetic Foot24 Sep 2026US 2026/0283822 A1
- Systems for real-time prediction of transitions to rigid and compliant surfaces using myoelectric and kinematic data10 Sep 2026US 2026/0263244 A1University of Delaware
- Integrated multimodal sensory and intelligent adaptive control system and method for prosthetic limbs27 Aug 2026US 2026/0248625 A1King Fahd University of Petroleum and Minerals
- Customized compliant prosthetic feet27 Aug 2026US 2026/0248626 A1Massachusetts Institute of Technology
Most cited
By later US patents
- Self-adjusting prosthetic ankle apparatus247US 6,443,993 B12002
- Shoe and foot prosthesis with bending beam spring structures186US 6,029,374 A2000
- Method of making a porous prothesis with biodegradable coatings184US 5,947,893 ABoard of Regents, The University of Texas System · 1999
- Lower limb prosthesis with means for restricting dorsi-flexion177US 5,112,356 AChas. A. Blatchford & Sons Limited · 1992
- Electronically controlled prosthetic knee176US 6,764,520 B2Massachusetts Institute of Technology · 2004