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:
Dec. 11, 1990
Filed:
Sep. 05, 1989
Applicant:
Inventors:
Walter Kamutzki, Dieburg, DE;
Karl-Heinz Keil, Hanau-Mittelbuchen, DE;
Assignee:
Cassella Aktiengesellschaft, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528310 ; 1621573 ; 21050038 ; 525420 ; 525423 ; 525430 ; 525435 ; 528318 ;
Abstract
A water-soluble organic polybase which is useful for the cationization of asbestos-free, cellulose fiber filter media is prepared by reacting a mixture of a compound of the formula
Kamutzki, Walter. (1990). Polybase from amino amido carboxylic acid, polyamine and difunctional (U.S. Patent No. 4977239). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4977239
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile