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:
Jan. 05, 2016
Filed:
Mar. 25, 2011
Munmaya K. Mishra, Manakin Sabot, VA (US);
Shengsheng Liu, Richmond, VA (US);
William R. Sweeney, Richmond, VA (US);
Peter J. Lipowicz, Midlothian, VA (US);
Munmaya K. Mishra, Manakin Sabot, VA (US);
Shengsheng Liu, Richmond, VA (US);
William R. Sweeney, Richmond, VA (US);
Peter J. Lipowicz, Midlothian, VA (US);
PHILIP MORRIS USA INC., Richmond, VA (US);
Abstract
A process for preparing a filter plug for a smoking article, such as a cigarette, includes: (a) freeze-drying a solution of a biopolymer to form a structure; and (b) cutting the structure to a predetermined dimension, to thereby prepare a filter plug for a smoking article. Another process for preparing a filter plug for a smoking article, such as a cigarette, includes: (a) extruding a mixture of a foaming agent and a biopolymer comprising a protein to form a structure; and (b) cutting the structure to a predetermined dimension, to thereby form a filter plug for a smoking article.