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:
Dec. 12, 2023
Filed:
Aug. 30, 2022
Philip Morris Products S.a., Neuchatel, CH;
Philip Morris Products S.A., Neuchatel, CH;
Abstract
An inductive heating device heats an aerosol-forming substrate including a susceptor. The device includes a device housing, a DC power source for providing a DC supply voltage and a DC current, power supply electronics including a DC/AC converter, the DC/AC converter including an LC load network including a series connection of a capacitor and an inductor having an ohmic resistance, a cavity in the device housing for accommodating a portion of the aerosol-forming substrate to inductively couple the inductor of the LC load network to the susceptor. The inductor is embedded in the device housing at a proximal end of the device housing to surround the cavity which is also arranged at the proximal end of the device housing. A microcontroller determines from the DC supply voltage and the DC current an apparent ohmic resistance, and from the apparent ohmic resistance the temperature of the susceptor.