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. 19, 2020
Filed:
Nov. 30, 2018
Apple Inc., Cupertino, CA (US);
J. Stephen Smith, San Jose, CA (US);
Behrooz Shahsavari, Hayward, CA (US);
Jacob E. Mattingley, Cupertino, CA (US);
Joseph C. Doll, Mountain View, CA (US);
Steven P. Hotelling, Los Gatos, CA (US);
Siddharth Seth, Campbell, CA (US);
Douglas J. Adams, Mountain View, CA (US);
Michael A. Cretella, San Jose, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
A wireless power transmitting device transmits wireless power signals to a wireless power receiving device. The wireless power receiving device has a rectifier and a wireless power receiving coil that receives wireless power signals. The wireless power transmitting device uses a layer of coils to transmit the wireless power signals. A dielectric layer in the wireless power transmitting device defines a charging surface that receives the wireless power receiving device. A layer of temperature sensors is interposed between the layer of coils and the dielectric layer. Control circuitry in the wireless power transmitting device uses temperature information from the temperature sensors to determine whether a foreign object such as a coin is present on the charging surface.