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:
Aug. 23, 2022
Filed:
Dec. 17, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Kelvin J. Witcher, Hudson, WI (US);
Francois Ahimou, Woodbury, MN (US);
Naiyong Jing, St. Paul, MN (US);
Tonya D. Bonilla, Woodbury, MN (US);
Joshua D. Erickson, Champlin, MN (US);
Hsi-Chou Liu, Woodbury, MN (US);
Andrew W. Vail, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A method is provided. The method includes providing an article, the article including a nonwoven substrate having a copolymer grafted thereto, the copolymer including interpolymerized monomer units of a quaternary ammonium-containing ligand monomers; an amide monomer; an oxy monomer; and a coating on the nonwoven substrate, the coating including a plurality of test microorganisms, an enzyme or a second substrate; and contacting the article with a detection medium for a period of time.