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:
Mar. 27, 1984
Filed:
Jun. 24, 1982
Applicant:
Inventors:
Charles G Lamb, Anchorage, KY (US);
Robert A Sanford, Prospect, KY (US);
Assignee:
Brown & Williamson Tobacco Corporation, Louisville, KY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D / ; A24D / ;
U.S. Cl.
CPC ...
131336 ; 131339 ; 131340 ;
Abstract
A filter for a cigarette includes a generally cylindrical permeable filter rod circumscribed by an air permeable tipping material with a plurality of blind-end channels formed in the filter rod, each of the channels being open at one end to the upstream end of the filter rod and extending therefrom, generally in the longitudinal direction of the filter rod, a predetermined distance less than the length of the filter rod.