A61L 2300/208
Quaternary ammonium compounds
A61L2300/208 (Quaternary ammonium compounds) appears on 149 US grants and 188 published applications in this corpus.
Search patents in A61L- Granted patents
- 149
- Published applications
- 188
- Assignees
- 133
- Inventors
- 462
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 3 | 2 |
| 2003 | 2 | 4 |
| 2004 | 1 | 2 |
| 2005 | 1 | 8 |
| 2006 | 2 | 5 |
| 2007 | 2 | 5 |
| 2008 | 0 | 11 |
| 2009 | 1 | 4 |
| 2010 | 9 | 17 |
| 2011 | 6 | 7 |
| 2012 | 7 | 6 |
| 2013 | 8 | 7 |
| 2014 | 5 | 7 |
| 2015 | 5 | 8 |
| 2016 | 2 | 10 |
| 2017 | 4 | 9 |
| 2018 | 7 | 15 |
| 2019 | 6 | 6 |
| 2020 | 7 | 4 |
| 2021 | 7 | 14 |
| 2022 | 2 | 11 |
| 2023 | 4 | 7 |
| 2024 | 5 | 7 |
| 2025 | 10 | 8 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Color-changing antibacterial nanofiber29 Sep 2026US 12,746,214 B2University of Manitoba
- Anti-microbial activity through a protective coating on medical articles18 Aug 2026US 12,708,700 B2Solventum Intellectual Properties Company
- Bladder, ureter, kidney, urethra, prostate and catheter anti-microbial, and biofilm prevention, reduction and treatment7 Jul 2026US 12,673,140 B2Uhi, LLC
- Wound healing dressings and formulations and methods of use thereof5 May 2026US 12,616,716 B2Polaroid Therapeutics AG
- Delivery systems for administration of cationic biological actives17 Feb 2026US 12,551,596 B2Allvivo Vascular, Inc.
- Antimicrobial and/or radiopaque bulking agents8 Oct 2026US 2026/0306722 A1Boston Scientific Scimed, Inc.
- Antimicrobial and/or antiadhesive crosslinking agents and antimicrobial and/or antiadhesive medical hydrogels formed therefrom16 Apr 2026US 2026/0103570 A1Boston Scientific Scimed, Inc.
- Wound treatment system19 Feb 2026US 2026/0048168 A1Kimmerling Holdings Group, LLC
- Compositions for Wetness Indication12 Feb 2026US 2026/0042926 A1Chromatic Technologies, Inc.
- Antimicrobial compositions and articles made therefrom14 Aug 2025US 2025/0256013 A1Solventum Intellectual Properties Company
Most cited
By later US patents
- Method of providing a substrate with a bio-active/biocompatible coating354US 5,869,127 ABoston Scientific Corporation · 1999
- Disposable absorbent articles for incontinent individuals163US 4,842,593 AThe Procter & Gamble Company · 1989
- Substrates, particularly medical devices, provided with bio-active/biocompatible coatings148US 6,099,563 ABoston Scientific Corporation · 2000
- Compositions and methods114US 7,198,800 B12007
- Process for dyeing absorbent microbiocidal fabric and product so produced91US 4,408,996 ABurlington Industries, Inc. · 1983