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.

Date of Patent:
Feb. 03, 2026

Filed:

Apr. 02, 2020
Applicant:

3m Innovative Properties Company, St. Paul, MN (US);

Inventor:

Evan D. Brutinel, Inver Grove Heights, MN (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12Q 1/04 (2006.01); C09K 8/66 (2006.01); C12M 1/00 (2006.01); C12M 1/12 (2006.01); C12M 1/30 (2006.01); C12M 1/34 (2006.01); C12Q 1/06 (2006.01);
U.S. Cl.
CPC ...
C12Q 1/04 (2013.01); C09K 8/66 (2013.01); C12M 23/04 (2013.01); C12M 23/20 (2013.01); C12M 25/06 (2013.01); C12M 33/02 (2013.01); C12M 41/36 (2013.01); C12Q 1/06 (2013.01);
Abstract

A method. The method includes providing a device, the device comprising: a body member comprising a self-supporting, waterproof substrate having upper and lower surfaces; and a layer of adhesive-coated on the upper surface of the substrate, the adhesive being non-inhibitory to the growth of microorganisms; and a cold-water-soluble powder adhered to the adhesive, the powder comprising: guar gum; one or more nutrients for growing microorganisms; and a cover sheet having an inner-facing surface and an outer-facing surface, the cover sheet adhered to at least a portion of the body member; incubating a sample in the device to form a gel; and counting colonies between 24 hours to 72 hours and/or determining if the gel surrounding a colony is degraded.


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