Patent · US Active

Microbial detection article having a water-absorbent filter assembly

US8906645B2 · kind B2 · utility

3Cited by

38References

20Claims

0Family size

Assignee

3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

Steven P. Swanson · Blaine, US
Jesse D. Miller · Hudson, US
Clinton P. Waller, Jr. · White Bear Lake, US
Neil Percy · Windom, US
Jeffrey A. Lucas · Windom, US
Kannan Seshadri · Woodbury, US
Jerald K. Rasmussen · Woodville, US
Douglas E. Weiss · Overland Park, US
James E. Aysta · Stillwater, US

Key dates

Filing date	Dec 27, 2011
Grant date	Dec 9, 2014
Priority date	—
Expiry date	Dec 27, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC12Q1/24
WIPO fieldBiotechnology
WIPO sectorChemistry

Abstract

A microbial detection article and methods of using the same, the article comprising: a base member comprising a self-supporting water impervious substrate with first and second generally opposed major surfaces; a filter assembly defining a filter assembly aperture therein, and having a composite filter body mounted across the filter assembly aperture; wherein the composite filter body comprises: a microporous membrane, and a water-absorbent layer in fluid communication with the microporous membrane; and a cover sheet.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.