A61K 47/186
Quaternary ammonium compounds
Official title: {Quaternary ammonium compounds, e.g. benzalkonium chloride or cetrimide}
A61K47/186 (Quaternary ammonium compounds) appears on 567 US grants and 1,128 published applications in this corpus.
Search patents in A61K- Granted patents
- 567
- Published applications
- 1,128
- Assignees
- 550
- Inventors
- 1,815
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 9 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 3 |
| 2002 | 7 | 12 |
| 2003 | 2 | 15 |
| 2004 | 4 | 19 |
| 2005 | 7 | 17 |
| 2006 | 6 | 10 |
| 2007 | 6 | 20 |
| 2008 | 7 | 16 |
| 2009 | 4 | 18 |
| 2010 | 5 | 18 |
| 2011 | 10 | 21 |
| 2012 | 9 | 22 |
| 2013 | 18 | 29 |
| 2014 | 13 | 29 |
| 2015 | 21 | 31 |
| 2016 | 25 | 40 |
| 2017 | 25 | 46 |
| 2018 | 17 | 45 |
| 2019 | 19 | 68 |
| 2020 | 40 | 75 |
| 2021 | 37 | 130 |
| 2022 | 44 | 86 |
| 2023 | 36 | 103 |
| 2024 | 51 | 105 |
| 2025 | 54 | 83 |
| 2026 | 25 | 67 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for preparing liposomal formulations15 Sep 2026US 12,734,181 B2Jazz Pharmaceuticals Therapeutics, Inc.
- Compositions and systems comprising transfection-competent vesicles free of organic-solvents and detergents and methods related thereto1 Sep 2026US 12,721,909 B2The University of British Columbia
- Compositions and methods for the treatment of motion sickness and emesis18 Aug 2026US 12,708,628 B2Repurposed Therapeutics, Inc.
- Rock inhibitors and uses thereof28 Jul 2026US 12,692,234 B2Alcon Inc.
- Nasal spray composition16 Jun 2026US 12,653,833 B2Glenmark Specialty S.A.
- Methods of sensitizing tumors to treatment with immune checkpoint inhibitors8 Oct 2026US 2026/0306658 A1University of Florida Research Foundation, Inc.
- Ophthalmic cooling solutions1 Oct 2026US 2026/0294796 A1
- Ophthalmic solutions for canine, feline & equine glaucoma and oht1 Oct 2026US 2026/0294797 A1
- Composition containing cyclic peptide compound and surfactant1 Oct 2026US 2026/0294806 A1Chugai Seiyaku Kabushiki Kaisha
- Ophthalmic cooling solutions1 Oct 2026US 2026/0294850 A1
Most cited
By later US patents
- Cationic lipids for intracellular delivery of biologically active molecules586US 5,459,127 AVical Incorporated · 1995
- Cationic lipids for intracellular delivery of biologically active molecules545US 5,264,618 AVical Incorporated · 1993
- N-(.omega.,(.omega.-1)-dialkyloxy)- and N-(.omega.,(.omega.-1)-dialkenyloxy)-alk-1-yl-N,N,N-tetrasubstituted ammonium lipids and uses therefor306US 4,946,787 ASyntex (U.S.A.) Inc. · 1990
- N-.omega.,(.omega.-1)-dialkyloxy)- and N-(.omega.,(.omega.-1)-dialkenyloxy)Alk-1-YL-N,N,N-tetrasubstituted ammonium lipids and uses therefor234US 5,049,386 ASyntex (U.S.A.) Inc. · 1991
- N-(.omega., (.omega.-1)-dialkyloxy)- and N-(.omega., (.omega.-1)-dialkenyloxy)-alk-1-yl-N,N,N-tetrasubstituted ammonium lipids and uses therefor198US 5,208,036 ASyntex (U.S.A.) Inc. · 1993