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. 24, 2022
Filed:
Jun. 27, 2017
Philip Morris Products S.a., Neuchatel, CH;
Loi Mark C. Figueroa, Cabuyao Laguna, PH;
Jerome Uthurry, Neuchatel, CH;
Philip Morris Products S.A., Neuchatel, CH;
Abstract
The invention relates to a smoking article () comprising a tobacco rod () and a filter, the filter comprising a filter unit () comprising a first segment () of filtration material; a second segment comprising a tubular element () of filtration material upstream of the first segment (), the tubular element () having an outer diameter (D) and an inner diameter (D). An inner surface of the tubular element () is substantially air impermeable. The second segment further comprises a frangible or irreversibly collapsible flow restrictor () disposed in the tubular element (). When the flow restrictor () is in a substantially unbroken or non-collapsed state, the filter unit () has a first RTD. When the flow restrictor () is broken or collapsed, the filter unit () has a second RTD, the second RTD being smaller than the first RTD.