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:
Mar. 01, 2022
Filed:
Oct. 12, 2017
3m Innovative Properties Company, Saint Paul, MN (US);
G. Marco Bommarito, Stillwater, MN (US);
Timothy J. Nies, Stillwater, MN (US);
Barry W. Robole, Woodville, WI (US);
Assumpta A. G. Bennaars-Eiden, Woodbury, MN (US);
Jodi L. Connell, Saint Paul, MN (US);
Tonya D. Bonilla, Woodbury, MN (US);
Timothy A. Kohman, Cottage Grove, MN (US);
Ruthann R. Duda, Eagan, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A microbial indicator device for liquid disinfection comprises a first cavity, a source of biological activity fluidically coupled to the first cavity via a portion of a first fluidic path, a filter membrane positioned in a second fluidic path for a disinfectant, and a first coupling portion fluidically coupled to the source of biologically activity via the second fluidic path. The filter membrane has a first side and a second side, wherein the first side is in fluid communication with the first fluidic path. The filter membrane has a pore size sufficient to retain at least a portion of the source of biological activity on the first side. The device further comprises a frangible container contained in the first cavity, wherein a liquid in the container is in fluid communication with the first cavity when the container is fractured.