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:
Sep. 01, 2020
Filed:
Dec. 17, 2013
Philip Morris Products S.a., Neuchatel, CH;
Leonardo Nappi, Hauterive, CH;
Clement Besso, Neuchatel, CH;
Philip Morris Products S.A., Neuchatel, CH;
Abstract
There is provided a method and apparatus for manufacturing filters for smoking articles. The method comprises providing hollow tubes () of filter material. Each hollow tube has an outer diameter and an inner diameter. The method further comprises providing filter inserts (). Each filter insert () has a first portion having a cross sectional dimension larger than the inner diameter of the hollow tube. The method further comprises inserting each filter insert () into a hollow tube () of filter material. During inserting, the first portion of the filter insert () engages with the hollow tube () to retain the filter insert in the hollow tube.