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:
Jun. 20, 2023
Filed:
Jul. 31, 2013
Applicant:
Essentra Filter Products Development Co. Pte. Ltd, Singapore, SG;
Inventors:
Assignee:
Essentra Filter Products Development Co. Pte. Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A24D 3/06 (2006.01); A24D 3/04 (2006.01); A24D 3/10 (2006.01); A24D 3/16 (2006.01);
U.S. Cl.
CPC ...
A24D 3/062 (2013.01); A24D 3/04 (2013.01); A24D 3/043 (2013.01); A24D 3/048 (2013.01); A24D 3/10 (2013.01); A24D 3/163 (2013.01);
Abstract
A tobacco smoke filter or filter element comprising a stiff outer wrapper engaged around a downstream thermoformed core of tobacco smoke filtering material and a further core longitudinally aligned therewith; the downstream thermoformed core having a profiled outer surface which defines with the stiff outer wrapper at least one longitudinally extending channel which extends the length of the downstream core.