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:
Feb. 08, 1983
Filed:
May. 20, 1981
Applicant:
Inventors:
Erwin Kausch, Jesteburg, DE;
Folkhard Todter, Hamburg, DE;
Assignee:
B.A.T. Cigaretten-Fabriken GmbH, Hamburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A24D / ;
U.S. Cl.
CPC ...
131332 ; 131342 ; 131345 ;
Abstract
This invention relates to a material for tobacco smoke filters. This material comprises cellulose fibers containing amino groups and is obtainable by reacting certain amino compounds with certain reactive cellulose derivatives. Preferably, the filter material of the present invention contains from 70 .mu.moles to 2 mmoles of amino groups per gram of filter material.