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:
Apr. 21, 2026
Filed:
Feb. 01, 2023
Witricity Ai Tech, Llc, Stuart, FL (US);
WiTricity AI Tech, LLC, Stuart, FL (US);
Abstract
In aspects, techniques for detecting and discriminating foreign objects near an inductive wireless power transfer system is disclosed. The method is based on hybrid inductive and capacitive sensing. The apparatus includes a sensing system, a measurement circuit, and a controller. The sensing system senses the object based on at least one of an inductive or a capacitive effect. The sensing system includes an inductive sense element, which has an electrical characteristic that changes in a presence of the object based on the inductive effect. The sensing system further includes a capacitive sense element, which has an electrical characteristic that changes in the presence of the object based on the capacitive effect. The measurement circuit measures the electrical characteristics in the inductive and capacitive sense circuits. The controller determines the presence of the object, and discriminates between metallic and non-metallic objects based on the change in the measured electrical characteristics.