A61L 12/141
Biguanides
Official title: {Biguanides, e.g. chlorhexidine}
A61L12/141 (Biguanides) appears on 115 US grants and 152 published applications in this corpus.
Search patents in A61L- Granted patents
- 115
- Published applications
- 152
- Assignees
- 42
- Inventors
- 190
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 2 |
| 2002 | 4 | 5 |
| 2003 | 4 | 10 |
| 2004 | 3 | 11 |
| 2005 | 1 | 7 |
| 2006 | 4 | 18 |
| 2007 | 3 | 15 |
| 2008 | 1 | 12 |
| 2009 | 3 | 10 |
| 2010 | 2 | 2 |
| 2011 | 4 | 9 |
| 2012 | 4 | 3 |
| 2013 | 2 | 8 |
| 2014 | 6 | 5 |
| 2015 | 5 | 5 |
| 2016 | 9 | 4 |
| 2017 | 4 | 7 |
| 2018 | 4 | 2 |
| 2019 | 4 | 6 |
| 2020 | 3 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 3 |
| 2023 | 0 | 2 |
| 2024 | 2 | 3 |
| 2025 | 1 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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
- Preservative-free contact lens treating solution comprising hyaluronic acid and erythritol4 Mar 2025US 12,239,658 B2Bausch + Lomb Ireland Limited
- Eye wash compositions and methods9 Apr 2024US 11,951,087 B2
- Ophthalmic solutions2 Apr 2024US 11,944,638 B2Bausch + Lomb Ireland Limited
- Treatment fluid for soft contact lens7 May 2026US 2026/0125617 A1Nof Corporation
- 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
Most cited
By later US patents
- Disinfecting and preserving systems and methods of use134US 4,758,595 ABausch & Lomb Incorporated · 1988
- Disinfecting and preserving systems and methods of use97US 4,836,986 ABausch & Lomb Incorporated · 1989
- Treatment of contact lenses with aqueous solution comprising a biguanide disinfectant and a complementary phosphate-borate buffer system71US 6,143,244 ABausch & Lomb Incorporated · 2000
- Flexible contact lens cleaning, storing, and wetting compositions70US 3,954,644 AFlow Pharmaceuticals, Inc. · 1976
- Compositions comprising polyquaterniums in combination with polymeric biguanides for disinfecting contact lenses55US 6,153,568 A2000