A61L 27/52
Hydrogels or hydrocolloids
A61L27/52 (Hydrogels or hydrocolloids) appears on 2,149 US grants and 3,874 published applications in this corpus.
Search patents in A61L- Granted patents
- 2,149
- Published applications
- 3,874
- Assignees
- 1,538
- Inventors
- 6,602
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 5 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 8 | 0 |
| 1994 | 6 | 0 |
| 1995 | 7 | 0 |
| 1996 | 10 | 0 |
| 1997 | 16 | 0 |
| 1998 | 19 | 0 |
| 1999 | 16 | 0 |
| 2000 | 16 | 0 |
| 2001 | 20 | 19 |
| 2002 | 22 | 35 |
| 2003 | 27 | 38 |
| 2004 | 22 | 62 |
| 2005 | 11 | 55 |
| 2006 | 22 | 65 |
| 2007 | 19 | 81 |
| 2008 | 13 | 70 |
| 2009 | 16 | 79 |
| 2010 | 44 | 119 |
| 2011 | 49 | 117 |
| 2012 | 65 | 120 |
| 2013 | 71 | 129 |
| 2014 | 101 | 165 |
| 2015 | 108 | 142 |
| 2016 | 86 | 190 |
| 2017 | 126 | 194 |
| 2018 | 121 | 179 |
| 2019 | 118 | 253 |
| 2020 | 148 | 256 |
| 2021 | 145 | 256 |
| 2022 | 131 | 271 |
| 2023 | 134 | 247 |
| 2024 | 137 | 291 |
| 2025 | 150 | 241 |
| 2026 | 103 | 200 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Additive manufacturing based on fluid-fluid interface6 Oct 2026US 12,752,492 B2Carnegie Mellon University
- Hydrogel systems for skeletal interfacial tissue regeneration applied to epiphyseal growth plate repair29 Sep 2026US 12,746,258 B2University of Pittsburgh—Of the Commonwealth System of Higher Education
- Hyaluronic acid derivative and use thereof29 Sep 2026US 12,746,306 B2Amtixbio Co., Ltd.
- Tissue engineered vascular grafts29 Sep 2026US 12,746,309 B2Medtronic, Inc.
- Self-assembling peptides and hydrogels29 Sep 2026US 12,747,264 B2University of Virginia Patent Foundation
- Self-healing hydrogel8 Oct 2026US 2026/0306706 A1Indian Institute of Technology Indore
- Double networked 3d-printed biomaterials8 Oct 2026US 2026/0306707 A1The Brigham and Women S Hospital, Inc.
- Synthetic biopolymer solutions with increased lower critical solution temperatures8 Oct 2026US 2026/0306708 A1Dsm IP Assets B.V.
- Photocurable hydrogel compositions8 Oct 2026US 2026/0306710 A1Tympanogen, Inc.
- Bio-orthogonal hydrogels for sustained replease drug delivery8 Oct 2026US 2026/0306717 A1Ocular Therapeutix, Inc.
Most cited
By later US patents
- In situ polymerizable hydrogels2,015US 6,818,018 B1Incept, LLC · 2004
- Hemostatic implant1,078US 9,889,230 B2Covidien LP · 2018
- Hydrogel intervertebral disc nucleus927US 5,047,055 APfizer Hospital Products Group, Inc. · 1991
- Photopolymerizable biodegradable hydrogels as tissue contacting materials and controlled-release carriers896US 5,410,016 ABoard of Regents, The University of Texas System · 1995
- Hydrogel bead intervertebral disc nucleus850US 5,192,326 APfizer Hospital Products Group, Inc. · 1993