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:
Apr. 22, 1997
Filed:
Nov. 15, 1994
Cynthia W Arterbery, Midlothian, VA (US);
W Timothy Callaham, Richmond, VA (US);
Gus D Keritsis, Richmond, VA (US);
Donald E Laslie, Midlothian, VA (US);
Kenneth A Newman, Prince George, VA (US);
Roger S Slagle, Chesterfield, VA (US);
Morris F White, Jr, Chesterfield, VA (US);
Philip Morris Incorporated, New York, NY (US);
Abstract
A concentric smoking filter in which the peripheral filter medium is a fibrous tow, such as fibrous cellulose acetate tow, and the core filter medium is a web material, such as paper, loaded with carbon particles, is provided. The filter improves the taste, particularly, of 'ultra-light' cigarettes.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile