A61K 31/722
Chitin, chitosan
A61K31/722 (Chitin, chitosan) appears on 438 US grants and 805 published applications in this corpus.
Search patents in A61K- Granted patents
- 438
- Published applications
- 805
- Assignees
- 461
- Inventors
- 1,482
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 7 |
| 2002 | 6 | 17 |
| 2003 | 6 | 11 |
| 2004 | 6 | 12 |
| 2005 | 5 | 22 |
| 2006 | 6 | 24 |
| 2007 | 4 | 21 |
| 2008 | 4 | 21 |
| 2009 | 5 | 34 |
| 2010 | 7 | 37 |
| 2011 | 10 | 35 |
| 2012 | 15 | 32 |
| 2013 | 29 | 39 |
| 2014 | 28 | 44 |
| 2015 | 32 | 38 |
| 2016 | 22 | 50 |
| 2017 | 24 | 48 |
| 2018 | 18 | 34 |
| 2019 | 28 | 41 |
| 2020 | 24 | 40 |
| 2021 | 25 | 30 |
| 2022 | 21 | 37 |
| 2023 | 19 | 41 |
| 2024 | 23 | 32 |
| 2025 | 24 | 29 |
| 2026 | 19 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tissue marker25 Aug 2026US 12,714,536 B2Surgmark GmbH
- Compositions and methods of treating dry eye syndrome and other traumatized non-keratinized epithelial surfaces23 Jun 2026US 12,661,374 B2Eye Care International, LLC
- Acacia nilotica based hydrogel and method of making the same9 Jun 2026US 12,648,981 B1King Saud University
- POSS viscoelastic hemostatic agents2 Jun 2026US 12,642,886 B2Hybrid Plastics, Inc.
- Hydrophobically modified chitosan compositions2 Jun 2026US 12,643,993 B2Medcura, Inc.
- Novel glycan compounds for age-related macular degeneration8 Oct 2026US 2026/0306530 A1The Regents of the University of California
- Method for treating covid-19 infection in a human subject10 Sep 2026US 2026/0263510 A1Imam Abdulrahman Bin Faisal University
- Reactive and sorbent materials20 Aug 2026US 2026/0240896 A1Guild Associates, Inc.
- Compositions and Methods for Peptide-Exosome Hybrid Wound Healing, Scar Prevention, and Post-Procedure Skin Recovery Using Placental Extracts and Biocompatible Scaffolds20 Aug 2026US 2026/0240911 A1
- Treatment of gut inflammatory diseases6 Aug 2026US 2026/0224609 A1Biokuris
Most cited
By later US patents
- Hemostatic tissue sealants283US 6,162,241 AFocal, Inc. · 2000
- Polyacid/polyalkylene oxide foams and gels and methods for their delivery124US 6,566,345 B2FzioMed, Inc. · 2003
- Injectable medical composition and method of use119US 5,639,796 AC. R. Bard, Inc. · 1997
- Chitosan-derived biomaterials63US 5,747,475 AWound Healing of Oklahoma · 1998
- Adherent N,O-Carboxymethylchitosan drug delivery devices for moist tissue and methods of their use62US 6,809,085 B1Chitogenics, Inc. · 2004