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:
Sep. 16, 2014
Filed:
Sep. 17, 2010
Applicants:
Colin Marshall, Wigton, GB;
Jamie Moffat, Wigton, GB;
Inventors:
Colin Marshall, Wigton, GB;
Jamie Moffat, Wigton, GB;
Assignee:
Innovia Films Limited, Wigton, Cumbria, GB;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A24D 3/06 (2006.01); D01F 2/28 (2006.01); D01F 2/00 (2006.01); B29C 47/00 (2006.01); A24D 3/10 (2006.01); D01F 2/02 (2006.01);
U.S. Cl.
CPC ...
A24D 3/068 (2013.01); D01F 2/28 (2013.01); D01F 2/00 (2013.01); B29C 47/0014 (2013.01); A24D 3/10 (2013.01); D01F 2/02 (2013.01);
Abstract
The present invention concerns a biodegradable cigarette filter tow comprising composite filaments of cellulose and cellulose acetate, and a process for making such a filter tow comprising providing a solution dope comprising a blend of cellulose and cellulose acetate in an ionic liquid or in N-methylmorphilone-N-oxide (NMMO), and spinning casting the blend into a protic solvent to generate fibers or films, and converting the fibers or films into cigarette filter tow. The invention also concerns cigarette filters and cigarettes made from such a filter tow.