The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 18, 2023
Filed:
Dec. 22, 2017
3m Innovative Properties Company, St. Paul, MN (US);
Assumpta A. G. Bennaars-Eiden, Woodbury, MN (US);
Tonya D. Bonilla, Woodbury, MN (US);
Jodi L. Connell, St. Paul, MN (US);
John J. Schmidt, Eagan, MN (US);
Andrew W. Vail, Bayport, MN (US);
Federica Sgolastra, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
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.