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. 12, 2007
Filed:
Jan. 30, 2004
Applicants:
Ichiro Atobe, Tokyo, JP;
Fumihiro Omori, Tokyo, JP;
Inventors:
Ichiro Atobe, Tokyo, JP;
Fumihiro Omori, Tokyo, JP;
Assignee:
Japan Tobacco, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D 3/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cigarette filter has filter sections including filter materials individually wrapped with plug wrap paper, forming paper for wrapping the filter sections integrally, and tipping paper covering the forming paper so as to connect the filter sections to a cigarette section to form a cigarette, wherein activated charcoal and an inorganic mineral-based porous material carrying ferrous sulfate/L-ascorbic acid are contained as adsorbents in at least one of the filter materials and a space between the filter materials.