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:
Aug. 15, 2017
Filed:
Feb. 07, 2013
Essentra Filter Products Development Co. Pte. Ltd;
Ahmad Fashihul Lisan, Sidoarjo, ID;
Sudirman Widiarto, Sidoarjo, ID;
ESSENTRA FILTER PRODUCTS DEVELOPMENT CO. PTE. LTD., Singapore, SG;
Abstract
The invention provides a method of producing a tobacco smoke filter or filter element comprising: • heat treating a continuously advancing longitudinally extending strand of material; • cooling the heat treated continuously advancing strand; and • forming a longitudinally extending outer layer of tobacco smoke filtering material around the continuously advancing strand, to form a continuously advancing rod comprising a longitudinally extending strand () of material and a longitudinally extending outer layer () of tobacco smoke filtering material engaged around the longitudinally extending strand (). An apparatus for carrying out the method, and products of the method, are also provided.