Article and methods to determine efficacy of disinfection process
US11629371B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2017 |
| Grant date | Apr 18, 2023 |
| Priority date | — |
| Expiry date | Aug 12, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61L2202/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An article is provided. The article comprises a nonwoven substrate having a copolymer grafted thereto, and a dried coating adhered to the substrate. The copolymer comprises interpolymerized monomer units of a quaternary ammonium-containing ligand monomer, an amide monomer, and an oxy monomer. The coating comprises a plurality of test microorganisms. Optionally, the coating further comprises a water-soluble or water-dispersible polymeric binding agent. A process challenge device comprising a body having a hollow channel with said article fixed disposed therein is also provided. Methods of using the article or the process challenge device for determining the efficacy of a disinfection process are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.