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:
Oct. 25, 1983
Filed:
Sep. 28, 1981
Applicant:
Inventors:
Migaku Suzuki, Kawanoe, JP;
Takashi Sakai, Toyama, JP;
Assignees:
Mitsubishi Rayon Co. Ltd., Tokyo, JP;
Mitsubishi Adetate Co. Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
A24D / ; A24D / ;
U.S. Cl.
CPC ...
493 46 ; 493 50 ; 131340 ;
Abstract
A method and apparatus for producing a tobacco smoke filter having a double structure composed of one inner core phase in a special fibrous arrangement and an outer skin layer in a different fibrous arrangement surrounding the core phase. The tobacco smoke filters made according to the present invention possess high collapse strength and physical and chemical characteristics in which the tastable components are filtered with low efficiency, while the tar and other particulate harmful matter are filtered with high efficiency.