A61L 33/0023
Using a quaternized group or a protonated amine group of the substrate
Official title: {using a quaternized group or a protonated amine group of the substrate}
A61L33/0023 (Using a quaternized group or a protonated amine group of the substrate) appears on 44 US grants and 24 published applications in this corpus.
Search patents in A61L- Granted patents
- 44
- Published applications
- 24
- Assignees
- 30
- Inventors
- 98
- Latest grant
- 29 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 1 |
| 2002 | 2 | 2 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 3 |
| 2022 | 2 | 1 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyurethane based medical articles29 Jul 2025US 12,370,291 B2Becton, Dickinson and Company
- Bioprosthetic valve and preparation method thereof24 Sep 2024US 12,097,113 B2Sichuan University
- Immobilised biological entities26 Dec 2023US 11,850,334 B2Carmeda AB
- Promoting endothelial cell affinity and antithrombogenicity of polytetrafluoroethylene (PTFE) by mussel-inspired modification and RGD/heparin grafting17 Oct 2023US 11,786,639 B2Wisconsin Alumni Research Foundation
- Promoting endothelial cell affinity and antithrombogenicity of polytetrafluoroethylene (PTFE) by mussel-inspired modification and RGD/heparin grafting1 Nov 2022US 11,484,626 B2Wisconsin Alumni Research Foundation
- Biodegradable Metallic - Polymeric Composite Prosthesis for Heart Valve Replacement26 Feb 2026US 2026/0053978 A1Ri.MED Foundation
- Polyurethane Based Medical Articles3 Jul 2025US 2025/0213754 A1Becton, Dickinson and Company
- Biofouling resistant coatings for medical devices17 Oct 2024US 2024/0342347 A1SurModics, Inc.
- Promoting endothelial cell affinity and antithrombogenicity of polytetrafluoroethylene (ptfe) by mussel-inspired modification and rgd/heparin grafting26 Jan 2023US 2023/0026861 A1Wisconsin Alumni Research Foundation
- Polyurethane Based Medical Articles25 Aug 2022US 2022/0265905 A1Becton, Dickinson and Company
Most cited
By later US patents
- Biocompatible metal surfaces447US 5,356,433 ACordis Corporation · 1994
- Lubricious antithrombogenic catheters, guidewires and coatings396US 5,135,516 ABoston Scientific Corporation · 1992
- Drug delivery390US 5,674,192 ABoston Scientific Corporation · 1997
- Stent lining329US 5,843,089 ABoston Scientific Corporation · 1998
- Drug delivery304US 6,409,716 B1SciMed Life Systems, Inc. · 2002