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. 30, 1993
Filed:
Jun. 03, 1991
Werner Schneider, Quickborn, DE;
Horst Borowski, Hamburg, DE;
Erwin Kausch, Jesteburg, DE;
Rolf Kutting, Jesteburg, DE;
Meinhard Meyer, Appen-Unterglinde, DE;
Knut Moller, Hamburg, DE;
Bernd-Henrik Muller, Hamburg, DE;
Erhard Rittershaus, Hamburg, DE;
Gert Rudolph, Hamburg, DE;
Adolf Schluter, Quickborn, DE;
Wolfgang Wiethaup, Hamburg, DE;
B.A.T. Cigarettenfabriken GmbH, Hamburg, DE;
Abstract
A coaxial filter cigarette with a rod portion having an inner core of material glowing substantially free of residue, in particular tobacco material, a sheath or wrapper for the inner core, an outer shell of tobacco and/or non-tobacco material coaxially surrounding the inner core or its sheath, respectively, a sheath or wrapper for the outer shell, and with a filter portion having a filter core, an air-impermeable sheath or wrapper for the filter core, a filter shell and a sheath or wrapper for the filter shell comprises a zone of the main heat source which is located in the inner core of the rod portion and a zone in which the major part of the aerosol reaching the mouth of the smoker is produced and which is located in the outer shell of the rod portion; the filter portion greatly reduces the combustion gases originating from the inner core of the rod portion and substantially reduces the smoke particles originating from the inner core, whereas the aerosol produced in the outer shell of the rod portion is influenced only slightly or not at all.