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. 24, 1998
Filed:
Jul. 08, 1996
Applicant:
Inventors:
Fritz Engelhardt, Frankfurt am Main, DE;
Uwe Stuven, Bad Soden, DE;
Thomas Daniel, Chesapeake, VA (US);
Norbert Herfert, Altenstadt, DE;
Assignee:
Clariant GmbH, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61K / ; A61K / ;
U.S. Cl.
CPC ...
424402 ; 524275 ; 524277 ; 424484 ; 424486 ; 424487 ;
Abstract
The present invention relates to hydrophilic, highly swellable hydrogels which are coated with nonreactive, water-insoluble waxes in a quantity of from about 0.05 to about 2% by weight, based on uncoated hydrogel.