A61L 27/56
Porous materials
Official title: Porous materials, {e.g. foams or sponges}
A61L27/56 (Porous materials) appears on 3,130 US grants and 4,960 published applications in this corpus.
Search patents in A61L- Granted patents
- 3,130
- Published applications
- 4,960
- Assignees
- 1,838
- Inventors
- 8,305
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 16 | 0 |
| 1988 | 11 | 0 |
| 1989 | 17 | 0 |
| 1990 | 23 | 0 |
| 1991 | 14 | 0 |
| 1992 | 14 | 0 |
| 1993 | 13 | 0 |
| 1994 | 21 | 0 |
| 1995 | 12 | 0 |
| 1996 | 22 | 0 |
| 1997 | 29 | 0 |
| 1998 | 39 | 0 |
| 1999 | 36 | 0 |
| 2000 | 26 | 0 |
| 2001 | 31 | 16 |
| 2002 | 29 | 51 |
| 2003 | 37 | 92 |
| 2004 | 37 | 114 |
| 2005 | 33 | 146 |
| 2006 | 55 | 100 |
| 2007 | 38 | 122 |
| 2008 | 31 | 121 |
| 2009 | 32 | 170 |
| 2010 | 70 | 185 |
| 2011 | 79 | 186 |
| 2012 | 99 | 172 |
| 2013 | 102 | 183 |
| 2014 | 155 | 246 |
| 2015 | 169 | 220 |
| 2016 | 162 | 280 |
| 2017 | 173 | 259 |
| 2018 | 156 | 266 |
| 2019 | 168 | 297 |
| 2020 | 219 | 313 |
| 2021 | 178 | 290 |
| 2022 | 157 | 248 |
| 2023 | 173 | 248 |
| 2024 | 179 | 279 |
| 2025 | 153 | 210 |
| 2026 | 99 | 146 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tapered heart valve covering6 Oct 2026US 12,751,822 B2Edwards Lifesciences Corporation
- Use of porous calcium-based granules for promoting healing of an intra-articular or peri-articular fracture of a fractured bone6 Oct 2026US 12,751,970 B2Joy Medical Devices Corporation
- Compressed bone composition and methods of use thereof6 Oct 2026US 12,752,040 B2LifeNet Health
- Additive manufacturing based on fluid-fluid interface6 Oct 2026US 12,752,492 B2Carnegie Mellon University
- Titanium mesh covered with biocompatible polypropylene film for covering and protecting bone grafts/biomaterials and process for obtaining same29 Sep 2026US 12,746,125 B2
- Hybrid three-dimensional printing and electrospinning platform for multi-layered biomimetic scaffolds8 Oct 2026US 2026/0306705 A1
- Tissue repair device and molding process8 Oct 2026US 2026/0306718 A1Dsm IP Assets B.V.
- Segmented calcium phosphate bone scaffolds with sacrificial zones for mechano-transductive bone regeneration and methods of making and using the same1 Oct 2026US 2026/0294629 A1Board of Regents, The University of Texas System
- Solid forms for tissue repair1 Oct 2026US 2026/0294634 A1Cartiheal (2009) Ltd.
- Surface treatment methods for cementless implantable medical devices24 Sep 2026US 2026/0284259 A1Durahip, LLC
Most cited
By later US patents
- Closed porous chambers for implanting tissue in a host1,958US 5,344,454 ABaxter International Inc. · 1994
- Porous tissue scaffoldings for the repair of regeneration of tissue1,754US 6,333,029 B1Ethicon, Inc. · 2001
- Microporous vascular graft1,647US 5,024,671 ABaxter International Inc. · 1991
- Foam composite for the repair or regeneration of tissue1,549US 6,306,424 B1Ethicon, Inc. · 2001
- Process for manufacturing biomedical foams1,536US 6,355,699 B1Ethicon, Inc. · 2002