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. 03, 2019
Filed:
Oct. 08, 2015
Philip Morris Products S.a., Neuchatel, CH;
Dominique Bernauer, Neuchatel, CH;
Felix Fernando, Basingstoke, GB;
Philip Morris Products S.A., Neuchatel, CH;
Abstract
A method of controlling an electric heater in an electrically heated smoking system is provided, including providing electrical power to the heater in pulses such that during active periods power is supplied to the heater and during inactive periods power is not supplied to the heater; charging a capacitor in an RC circuit during the inactive periods and allowing the capacitor to discharge during the active periods; and monitoring a discharge voltage of the capacitor and if the discharge voltage of the capacitor drops below a threshold voltage level, then stopping further supply of electrical power to the heater.