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:
May. 24, 2022
Filed:
Apr. 19, 2018
3m Innovative Properties Company, St. Paul, MN (US);
Jae Yong Lee, Santa Clara, CA (US);
Mahmut Aksit, Woodbury, MN (US);
Ravi Palaniswamy, Choa Chu Kang, SG;
Antonny E. Flor, Sembawang, SG;
James F. Poch, New Richmond, WI (US);
Michael A. Meis, Cushing, MN (US);
Alejandro Aldrin A. Narag, II, Choa Chu Kang, SG;
Siang Sin Foo, Sin Ming Walk, SG;
Donato G. Caraig, Bukit Panjang, SG;
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MN (US);
Abstract
Systems and methods for monitoring the status of air filters are provided. One or more thermoelectric sensors are provided to have an upstream sensing surface positioned adjacent the inlet surface of the air filter, and a downstream sensing surface positioned adjacent the outlet surface of the air filter. Sensing circuitry are connected to the thermoelectric sensors, configured to receive signals from the thermoelectric sensors and process the signals to obtain status information of the air filter.