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:
Oct. 26, 1999
Filed:
Dec. 23, 1997
Applicant:
Inventors:
Patricia-Ann Truter, Pretoria, ZA;
Sefora Francinah Ntshudisane, Marhibastad, ZA;
Jessica Ruth Wilson, Johannesburg, ZA;
Gillian Rae Cuthbert, Pretoria, ZA;
Assignee:
Implico BV, Amsterdam, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A61F / ;
U.S. Cl.
CPC ...
424443 ; 5147722 ; 525 61 ;
Abstract
The invention provides a translucent, water-insoluble hydrogel composition and methods of making it. The hydrogel composition comprises a polyvinyl alcohol polymer and a complexing agent which are physically crosslinked to form a semi-crystalline polyvinyl alcohol-complexing agent polymer complex. This is achieved by: