A61L 15/425
Porous materials
Official title: {Porous materials, e.g. foams or sponges}
A61L15/425 (Porous materials) appears on 957 US grants and 1,159 published applications in this corpus.
Search patents in A61L- Granted patents
- 957
- Published applications
- 1,159
- Assignees
- 553
- Inventors
- 2,347
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 6 | 0 |
| 1983 | 7 | 0 |
| 1984 | 1 | 0 |
| 1985 | 10 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 13 | 0 |
| 1989 | 6 | 0 |
| 1990 | 7 | 0 |
| 1991 | 13 | 0 |
| 1992 | 16 | 0 |
| 1993 | 14 | 0 |
| 1994 | 14 | 0 |
| 1995 | 11 | 0 |
| 1996 | 10 | 0 |
| 1997 | 16 | 0 |
| 1998 | 22 | 0 |
| 1999 | 20 | 0 |
| 2000 | 20 | 0 |
| 2001 | 21 | 5 |
| 2002 | 10 | 15 |
| 2003 | 16 | 24 |
| 2004 | 17 | 36 |
| 2005 | 9 | 27 |
| 2006 | 8 | 32 |
| 2007 | 11 | 29 |
| 2008 | 14 | 31 |
| 2009 | 6 | 37 |
| 2010 | 15 | 34 |
| 2011 | 14 | 40 |
| 2012 | 23 | 40 |
| 2013 | 24 | 42 |
| 2014 | 36 | 63 |
| 2015 | 27 | 58 |
| 2016 | 40 | 70 |
| 2017 | 42 | 59 |
| 2018 | 28 | 68 |
| 2019 | 52 | 72 |
| 2020 | 48 | 79 |
| 2021 | 44 | 68 |
| 2022 | 37 | 71 |
| 2023 | 43 | 52 |
| 2024 | 54 | 44 |
| 2025 | 38 | 38 |
| 2026 | 24 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wound dressing material and methods of making and using the same6 Oct 2026US 12,752,036 B2Solventum Intellectual Properties Company
- Sponge assembly6 Oct 2026US 12,752,037 B2CFields, LLC
- Hemostatic devices21 Jul 2026US 12,685,799 B2Teleflex Life Sciences II LLC
- Medical dressing7 Jul 2026US 12,672,982 B2
- Porous nanocomposite medical implant device9 Jun 2026US 12,648,904 B2Lynthera Corporation
- Incision dressing8 Oct 2026US 2026/0306302 A1DeRoyal Industries, Inc.
- Wound dressing comprising a ph sensor composition and method of producing the same3 Sep 2026US 2026/0256979 A1Instituto PolitéCnico Da Guarda
- Highly transparent thin polyvinyl alcohol aerogels and manufacture thereof20 Aug 2026US 2026/0242558 A1Northeastern University
- Device and method for treating skin injuries13 Aug 2026US 2026/0232864 A1Advanced Wound Systems, LLC
- Wound dressing with tissue regeneration effect and wound dressing production method6 Aug 2026US 2026/0224772 A1Afyonkarahisar Saglik Bilimleri Universitesi Ozel Kalem (Rektorluk)
Most cited
By later US patents
- Process for manufacturing biomedical foams1,536US 6,355,699 B1Ethicon, Inc. · 2002
- Modifiable, semi-permeable, wound dressing1,535US 5,264,218 AC. R. Bard, Inc. · 1993
- Wound dressing1,449US 5,973,221 ASeton Healthcare Group PLC. · 1999
- Non-adhesive elastic gelatin matrices1,357US 8,361,501 B2Covalon Technologies Inc. · 2013
- Wound dressing with conformable elastomeric wound contact layer1,263US 5,445,604 ASmith and Nephew Associated Companies Limited · 1995