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. 17, 2022
Filed:
Feb. 08, 2017
Hewlett-packard Development Company, L.p., Spring, TX (US);
Ning Ge, Palo Alto, CA (US);
Paul Howard Mazurkiewicz, Fort Collins, CO (US);
Helen A. Holder, Palo Alto, CA (US);
Peter A. Seiler, Fort Collins, CO (US);
Raphael Gay, Fort Collins, CO (US);
Tom J. Searby, Fort Collins, CO (US);
Hewlett-Packard Development Company, L.P., Spring, TX (US);
Abstract
In an example, an air filter system includes an air filter and a thermally conductive particulate sensor (TCPS). The TCPS includes a temperature sensor to measure a first temperature of the TCPS at a first time, measure a second temperature of the TCPS at a second time, and provide the measured first temperature and the measured second temperature to a controller. The controller to determine an actual rate of temperature change based on the measured first temperature and the measured second temperature, compare the actual rate of temperature change to a target rate of temperature change, and provide a notification when a difference between the actual rate of temperature change and the target rate of temperature change is greater than an accumulation threshold indicative of a threshold amount of particulate accumulation on the TCPS.