A61F 2002/444
For replacing the nucleus pulposus
Official title: {for replacing the nucleus pulposus}
A61F2002/444 (For replacing the nucleus pulposus) appears on 618 US grants and 911 published applications in this corpus.
Search patents in A61F- Granted patents
- 618
- Published applications
- 911
- Assignees
- 214
- Inventors
- 736
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 8 | 2 |
| 2002 | 15 | 31 |
| 2003 | 11 | 41 |
| 2004 | 20 | 56 |
| 2005 | 9 | 68 |
| 2006 | 21 | 94 |
| 2007 | 16 | 105 |
| 2008 | 9 | 82 |
| 2009 | 34 | 59 |
| 2010 | 52 | 54 |
| 2011 | 49 | 45 |
| 2012 | 48 | 44 |
| 2013 | 40 | 20 |
| 2014 | 40 | 29 |
| 2015 | 49 | 19 |
| 2016 | 33 | 30 |
| 2017 | 23 | 21 |
| 2018 | 20 | 23 |
| 2019 | 21 | 18 |
| 2020 | 15 | 16 |
| 2021 | 16 | 8 |
| 2022 | 16 | 12 |
| 2023 | 9 | 7 |
| 2024 | 7 | 12 |
| 2025 | 13 | 9 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Collapsible, rotatable and expandable spinal hydraulic prosthetic device1,011US 6,375,682 B12002
- Hydrogel intervertebral disc nucleus927US 5,047,055 APfizer Hospital Products Group, Inc. · 1991
- Method for surgical implantation of a prosthetic spinal disc nucleus912US 5,562,736 ARaymedica, Inc. · 1996
- Prosthetic spinal disc nucleus908US 5,674,295 ARaymedica, Inc. · 1997
- Hydrogel bead intervertebral disc nucleus850US 5,192,326 APfizer Hospital Products Group, Inc. · 1993