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. 07, 2025
Filed:
Jul. 03, 2019
Applicant:
Kt&g Corporation, Daejeon, KR;
Inventors:
Soo Ho Kim, Daejeon, KR;
Jin Chul Yang, Daejeon, KR;
Man Seok Seo, Daejeon, KR;
Jong Yeol Kim, Daejeon, KR;
Youn Keun Oh, Sejong, KR;
Tae Hoon Kim, Seoul, KR;
Moon Soo Yoon, Seoul, KR;
Assignee:
KT&G CORPORATION, Daejeon, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D 3/02 (2006.01); A24D 3/04 (2006.01);
U.S. Cl.
CPC ...
A24D 3/0287 (2013.01); A24D 3/04 (2013.01);
Abstract
A cigarette filter comprises a first filter portion comprising an irregularly folded and packed polymer sheet, and a first cigarette filter wrapping paper surrounding the polymer sheet, wherein the polymer sheet comprises a first polymer layer containing polyolefin or polyester and a second polymer layer positioned on the first polymer layer and containing polyolefin.