A61F 13/022
Having more than one layer with different fluid retention characteristics
Official title: {having more than one layer with different fluid retention characteristics}
A61F13/022 (Having more than one layer with different fluid retention characteristics) appears on 363 US grants and 467 published applications in this corpus.
Search patents in A61F- Granted patents
- 363
- Published applications
- 467
- Assignees
- 127
- Inventors
- 467
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 3 |
| 2002 | 5 | 4 |
| 2003 | 3 | 3 |
| 2004 | 0 | 16 |
| 2005 | 4 | 4 |
| 2006 | 3 | 6 |
| 2007 | 5 | 5 |
| 2008 | 7 | 9 |
| 2009 | 3 | 21 |
| 2010 | 5 | 16 |
| 2011 | 8 | 14 |
| 2012 | 19 | 20 |
| 2013 | 15 | 19 |
| 2014 | 19 | 27 |
| 2015 | 14 | 18 |
| 2016 | 10 | 33 |
| 2017 | 19 | 27 |
| 2018 | 29 | 26 |
| 2019 | 25 | 38 |
| 2020 | 18 | 36 |
| 2021 | 26 | 20 |
| 2022 | 16 | 34 |
| 2023 | 16 | 19 |
| 2024 | 18 | 16 |
| 2025 | 28 | 13 |
| 2026 | 13 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wound dressing and method of treatment6 Oct 2026US 12,751,865 B2Smith & Nephew, Inc.
- Partially transparent wound dressing22 Sep 2026US 12,740,894 B2Solventum Intellectual Properties Company
- Tissue healing14 Jul 2026US 12,678,338 B2Smith & Nephew, Inc.
- Controlled oxygen dressing16 Jun 2026US 12,653,720 B2Aatru Medical, LLC
- Dressing allowing enhanced articulation with strategic welds16 Jun 2026US 12,653,721 B2Solventum Intellectual Properties Company
- Wound dressing and method of use24 Sep 2026US 2026/0283855 A1Smith & Nephew, Inc.
- Apparatuses and methods for negative pressure wound therapy24 Sep 2026US 2026/0283856 A1Smith & Nephew, Inc.
- Collapsible dressing for negative pressure wound treatment24 Sep 2026US 2026/0284295 A1Smith & Nephew, Inc.
- Dressing allowing enhanced articulation with strategic welds17 Sep 2026US 2026/0272721 A1Solventum Intellectual Properties Company
- Deformable dressing for negative-pressure therapy17 Sep 2026US 2026/0272722 A1KCI Manufacturing Unlimited Company
Most cited
By later US patents
- Wound dressing1,355US 8,764,732 B2Smith & Nephew, Inc. · 2014
- Wound dressing1,225US 8,808,274 B2Smith & Nephew, Inc. · 2014
- Medical article having fluid control film323US 6,420,622 B13M Innovative Properties Company · 2002
- Vented wound dressing318US 5,056,510 AThe Kendall Company · 1991
- Multi layered wound dressing261US 7,759,537 B2Convatec Technologies Inc. · 2010