A61F 2/446
Having a circular or elliptical cross-section substantially parallel to the axis of
Official title: {having a circular or elliptical cross-section substantially parallel to the axis of the spine, e.g. cylinders or frustocones}
A61F2/446 (Having a circular or elliptical cross-section substantially parallel to the axis of) appears on 904 US grants and 927 published applications in this corpus.
Search patents in A61F- Granted patents
- 904
- Published applications
- 927
- Assignees
- 229
- Inventors
- 889
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 5 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 18 | 0 |
| 1998 | 13 | 0 |
| 1999 | 23 | 0 |
| 2000 | 40 | 0 |
| 2001 | 24 | 16 |
| 2002 | 36 | 68 |
| 2003 | 42 | 58 |
| 2004 | 37 | 71 |
| 2005 | 19 | 57 |
| 2006 | 28 | 39 |
| 2007 | 36 | 28 |
| 2008 | 20 | 17 |
| 2009 | 25 | 24 |
| 2010 | 29 | 27 |
| 2011 | 29 | 34 |
| 2012 | 21 | 38 |
| 2013 | 36 | 26 |
| 2014 | 31 | 23 |
| 2015 | 24 | 25 |
| 2016 | 21 | 43 |
| 2017 | 53 | 46 |
| 2018 | 37 | 45 |
| 2019 | 36 | 31 |
| 2020 | 34 | 30 |
| 2021 | 18 | 27 |
| 2022 | 36 | 38 |
| 2023 | 22 | 27 |
| 2024 | 35 | 33 |
| 2025 | 42 | 31 |
| 2026 | 15 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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