A61L 12/143
Quaternary ammonium compounds
Official title: {Quaternary ammonium compounds}
A61L12/143 (Quaternary ammonium compounds) appears on 124 US grants and 144 published applications in this corpus.
Search patents in A61L- Granted patents
- 124
- Published applications
- 144
- Assignees
- 50
- Inventors
- 216
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 9 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 8 |
| 2004 | 2 | 6 |
| 2005 | 0 | 10 |
| 2006 | 1 | 13 |
| 2007 | 3 | 10 |
| 2008 | 1 | 9 |
| 2009 | 3 | 13 |
| 2010 | 1 | 5 |
| 2011 | 4 | 4 |
| 2012 | 5 | 3 |
| 2013 | 3 | 7 |
| 2014 | 3 | 4 |
| 2015 | 6 | 5 |
| 2016 | 9 | 6 |
| 2017 | 4 | 6 |
| 2018 | 5 | 4 |
| 2019 | 3 | 8 |
| 2020 | 6 | 3 |
| 2021 | 1 | 3 |
| 2022 | 3 | 4 |
| 2023 | 1 | 6 |
| 2024 | 2 | 6 |
| 2025 | 2 | 0 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method to decontaminate solid surface24 Mar 2026US 12,582,731 B2Biomoneta Research Pvt Ltd.
- Contact lens treating solution3 Mar 2026US 12,564,602 B2Bausch + Lomb Ireland Limited
- High hyaluronate multi-purpose disinfection solutions for ophthalmic applications20 Jan 2026US 12,527,327 B2CIS Biopharma AG
- Method for producing coated medical device15 Jul 2025US 12,360,397 B2Toray Industries, Inc.
- Preservative-free contact lens treating solution comprising hyaluronic acid and erythritol4 Mar 2025US 12,239,658 B2Bausch + Lomb Ireland Limited
- High hyaluronate multi-purpose disinfection solutions for ophthalmic applications23 Apr 2026US 2026/0107944 A1CIS Biopharma AG
- Contact lens treating solution19 Dec 2024US 2024/0415873 A1Bausch + Lomb Ireland Limited
- Contact lens treating solution4 Jul 2024US 2024/0218291 A1
- Ophthalmic solutions13 Jun 2024US 2024/0189342 A1Bausch + Lomb Ireland Limited
- Contact lens treating solution23 May 2024US 2024/0166971 A1
Most cited
By later US patents
- Aqueous antimicrobial ophthalmic solutions140US 4,525,346 AAlcon Laboratories, Inc. · 1985
- Ophthalmic solutions121US 4,407,791 AAlcon Laboratories, Inc. · 1983
- Anti-microbial compositions and associated methods for preparing the same and for the disinfecting of various objects89US 4,499,077 A1985
- Soft contact lens preserving solutions88US 4,029,817 AAllergan Pharmaceuticals, Inc. · 1977
- Anti-microbial compositions comprising an aqueous solution of a germicidal polymeric nitrogen compound and a potentiating oxidizing agent72US 4,654,208 A1987