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:
Mar. 24, 1998
Filed:
Jul. 19, 1995
Applicant:
Inventors:
Fritz Engelhardt, Frankfurt am Main, DE;
Norbert Herfert, Altenstadt, DE;
Uwe Stuven, Bad Soden, DE;
Ulrich Riegel, Frankfurt am Main, DE;
Rudiger Funk, Niedernhausen, DE;
Detlev Seip, Kelkheim, DE;
Assignee:
Hoechst AG, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K / ; B01J / ; C08J / ;
U.S. Cl.
CPC ...
523206 ; 523201 ; 523205 ; 524 35 ; 524 47 ; 524560 ; 524563 ; 524916 ; 525 5423 ; 428407 ;
Abstract
The present invention relates to hydrophilic, highly swellable hydrogels which are coated with non-reactive, water-insoluble film-forming polymers.