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:
Jul. 19, 1994
Filed:
Nov. 12, 1992
Applicant:
Inventors:
Friedrich Engelhardt, Frankfurt am Main, DE;
Rudiger Funk, Wiesbaden-Naurod, DE;
Ulrich Riegel, Frankfurt am Main, DE;
Gerlinde Ebert, Dreieich, DE;
Hanss-Jerg Kleiner, Kronberg, DE;
Assignee:
Cassella Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08F / ; C08J / ; C08K / ; C08K / ;
U.S. Cl.
CPC ...
525340 ; 524530 ; 524916 ; 5253304 ; 5253298 ; 5253266 ; 525287 ; 525193 ; 526278 ;
Abstract
The present invention relates to a hydrophilic, highly swellable hydrogel based on (co)polymerized hydrophilic monomers or based on graft (co)polymers, characterized in that it has been surface-modified by means of a mixture of