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:
Feb. 14, 2012
Filed:
Jul. 30, 2007
James D. Evans, Chesterfield, VA (US);
G. Robert Scott, Midlothian, VA (US);
Steven F. Spiers, Richmond, VA (US);
James D. Evans, Chesterfield, VA (US);
G. Robert Scott, Midlothian, VA (US);
Steven F. Spiers, Richmond, VA (US);
Philip Morris USA Inc., Richmond, VA (US);
Abstract
A cigarette filter assembly comprises a hollow paper tube with a spaced apart solid fiber plugs inside the tube together with granular filter material in the spaces between the plugs. Energy activated adhesive is only between the solid filter plugs and interior surface portions of the tube. After the spaced apart solid fiber plugs are within the tube the adhesive is activated to secure the plugs to the tube. The energy activated adhesive is only on selected portions of the hollow tube where the solid fiber plugs are located or alternatively the adhesive is only on the exterior surface portions of the solid fiber plugs.