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:
Nov. 09, 1999
Filed:
Apr. 28, 1998
Werner Schneider, Quickborn, DE;
Brown & Williamson Tobacco Corporation, Louisville, KY (US);
Abstract
The invention refers to a ventilated filter cigarette comprising a tobacco rod, a wrapper for the tobacco rod and a filter ventilated through ventilation openings, including a coaxial filter element, comprising a filter core, a wrapper for the filter core, a filter jacket and a wrapper for the filter jacket, in which the material specifications of the tobacco rod and the filter and the dimensions of their individual components are designed to allow the smoke to flow mainly through the filter core (upon open ventilation zone) and when covering the ventilation openings, the smoke of the cigarette flows to a major degree through the filter jacket of the coaxial filter element.