A61L 12/142
Polymeric biguanides
Official title: {Polymeric biguanides}
A61L12/142 (Polymeric biguanides) appears on 87 US grants and 121 published applications in this corpus.
Search patents in A61L- Granted patents
- 87
- Published applications
- 121
- Assignees
- 31
- Inventors
- 148
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 2 |
| 2003 | 3 | 8 |
| 2004 | 1 | 6 |
| 2005 | 0 | 5 |
| 2006 | 2 | 13 |
| 2007 | 2 | 14 |
| 2008 | 1 | 9 |
| 2009 | 3 | 8 |
| 2010 | 2 | 1 |
| 2011 | 4 | 7 |
| 2012 | 3 | 2 |
| 2013 | 2 | 8 |
| 2014 | 4 | 3 |
| 2015 | 4 | 5 |
| 2016 | 9 | 4 |
| 2017 | 4 | 6 |
| 2018 | 3 | 2 |
| 2019 | 4 | 6 |
| 2020 | 3 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 3 |
| 2023 | 0 | 1 |
| 2024 | 1 | 3 |
| 2025 | 1 | 0 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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
- Ophthalmic solutions2 Apr 2024US 11,944,638 B2Bausch + Lomb Ireland Limited
- Ophthalmic contact lens solutions containing forms of vitamin B24 Mar 2020US 10,595,532 B2FXS Ventures, LLC
- 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
- Compositions comprising polyquaterniums in combination with polymeric biguanides for disinfecting contact lenses55US 6,153,568 A2000
- Contact lens wetting solution45US 4,783,488 ABausch & Lomb Incorporated · 1988
- Wetting solutions for contact lenses42US 4,786,436 ABausch & Lomb Incorporated · 1988