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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.:

US 12751496 B1

PDFFull Text
Date of Patent:
Oct. 06, 2026

Filed:

Jul. 13, 2022

Air pressure measurement to detect an obstruction in an airflow path

Applicant:

Philip Morris Products S.a., Neuchatel, CH;

Inventors:

Ricardo Cali, Mannheim, DE;

Wanjiang Han, La Tène, CH;

Assignee:

Philip Morris Products S.A., Neuchatel, CH;

Attorney:

Mueting Raasch Group

Primary Examiner:

Eric Yaary

Int. Cl.
CPC ...
A24F 47/00 (2020.01); A24F 40/10 (2020.01); A24F 40/44 (2020.01); A24F 40/51 (2020.01); A24F 40/53 (2020.01); A24F 40/57 (2020.01); A24F 40/85 (2020.01);
U.S. Cl.
CPC ...
A24F 40/53 (2020.01); A24F 40/10 (2020.01); A24F 40/44 (2020.01); A24F 40/51 (2020.01); A24F 40/57 (2020.01); A24F 40/85 (2020.01);
Abstract

A method of detecting the presence of an obstruction in an airflow path of an aerosol-generating system. The system () comprises a heater assembly () for heating an aerosol-forming substrate (), a power supply (), an airflow path defined between an air inlet () and an air outlet () and passing through the heater assembly (), and at least one sensor () for sensing an airflow property of air in the airflow path. The method comprising: a) measuring a value associated with the airflow property during the course of a user puff based on signals from the at least one sensor: b) comparing this measured value to a predetermined value; and c) detecting an obstruction in the airflow path based on the comparison; and limiting the power supplied to the heater assembly, or providing an indication, if an obstruction is detected.

Find Patent Forward Citations

Cali, Ricardo. (2026). Air pressure measurement to detect an obstruction in an airflow path (U.S. Patent No. 12751496). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12751496

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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