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:
Sep. 14, 2021
Filed:
Jun. 13, 2018
Applicant:
3m Innovative Properties Company, St. Paul, MN (US);
Inventors:
Zohaib Hameed, Woodbury, MN (US);
Nicholas T. Gabriel, Grand Rapids, MN (US);
Ronald D. Jesme, Plymouth, MN (US);
Christian Weinmann, Alsdorf, DE;
Kristin J. Godbey, Vadnais Heights, MN (US);
Bret W. Ludwig, Oakdale, MN (US);
John P. Baetzold, North St. Paul, MN (US);
Assignee:
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 22/04 (2006.01); H01Q 1/22 (2006.01); H04B 5/00 (2006.01);
U.S. Cl.
CPC ...
G01N 22/04 (2013.01); H01Q 1/225 (2013.01); H01Q 1/2283 (2013.01); H04B 5/0043 (2013.01);
Abstract
Wireless sensing devices including stable near-field antennas are provided. A spacer layer is attached to a portion of the substrate adjacent to the antenna. The spacer layer has a thickness T, a relative permittivity k, and a figure of merit defined as the ratio of T (in micrometers) by k. The spacer layer has the figure of merit no less than 20 (micrometers).