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:
Nov. 29, 2016
Filed:
Apr. 04, 2012
Michael C. Palazzotto, Woodbury, MN (US);
Justin Tungjunyatham, Roseville, MN (US);
Stefan H. Gryska, Woodbury, MN (US);
Michael S. Wendland, North St. Paul, MN (US);
Michael C. Palazzotto, Woodbury, MN (US);
Justin Tungjunyatham, Roseville, MN (US);
Stefan H. Gryska, Woodbury, MN (US);
Michael S. Wendland, North St. Paul, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A vapor sensor includes a capacitance-related property sensor element (), a heater circuit element (), a capacitance-related property measurement circuit element (), and at least one switch member (). The capacitance-related property sensor element includes a dielectric substrate (), a first conductive electrode (), a second conductive electrode (), and a layer of dielectric microporous material () disposed between and contacting the first conductive electrode and the second conductive electrode. The at least one switch member is capable of interrupting electrical communication between the first conductive electrode and the heater circuit element, and between the capacitance-related property measurement circuit element and the first conductive electrode.