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:
Oct. 14, 2014
Filed:
Mar. 29, 2011
Gary E. Dwyer, Mallorytown, CA;
Thomas W. Holmquist-brown, Hastings, MN (US);
Kiran S. Kanukurthy, Cottage Grove, MN (US);
Neal A. Rakow, Woodbury, MN (US);
Gary E. Dwyer, Mallorytown, CA;
Thomas W. Holmquist-Brown, Hastings, MN (US);
Kiran S. Kanukurthy, Cottage Grove, MN (US);
Neal A. Rakow, Woodbury, MN (US);
3M Innovative Properties Company, St. Paul, MN (US);
Abstract
A filter system includes a housing, a filter medium disposed within the housing, an optical analyte sensor, and an optical reader. The optical analyte sensor is characterized by a first region that exhibit a first response to an analyte of interest and a second region that exhibit a second, different, response to an analyte of interest. The optical analyte sensor includes a detection medium and is disposed within the housing such that the detection medium is in fluid communication with the filter medium. The optical reader includes at least one light source and at least one detector.