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. 21, 2017
Filed:
May. 30, 2012
Stefan H. Gryska, Woodbury, MN (US);
Michael C. Palazzotto, Woodbury, MN (US);
Krzysztof A. Lewinski, Mahtomedi, MN (US);
Stefan H. Gryska, Woodbury, MN (US);
Michael C. Palazzotto, Woodbury, MN (US);
Krzysztof A. Lewinski, Mahtomedi, MN (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
A humidity sensor element includes a dielectric substrate, a nonporous conductive electrode disposed on the dielectric substrate, a permeable conductive electrode having a thickness in a range of from 4 to 10 nanometers and permeable by water vapor, and a detection layer sandwiched between the nonporous conductive electrode and the permeable conductive electrode. The permeable conductive electrode is parallel to the nonporous electrode. Both conductive electrodes have respective conductive leads attached thereto. The detection layer includes a copolymer having monomeric units comprising wherein M represents H, or an alkali metal. A humidity sensor including the humidity sensor element is also disclosed.