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:
Nov. 15, 1983
Filed:
Aug. 21, 1981
Applicant:
Inventor:
Michiko Yagi, Tokyo, JP;
Assignee:
Kabushiki Kaisha Advance Kaihatsu Kenkyujo, Nihonbashi, JP;
Primary Examiner:
Int. Cl.
CPC ...
A24D / ; A24D / ; A24D / ;
U.S. Cl.
CPC ...
131334 ;
Abstract
A tobacco smoke filter capable of effectively removing carcinogenic substances from tobacco smoke is presented. This tobacco filter contains an aqueous solution of a compound having a metallic ion or especially ferric ion binding protoporphyrin ring structure, as a removal agent of carcinogenic substances from the tobacco smoke, and a porous carrier therefor.