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:
Apr. 17, 2012
Filed:
Dec. 19, 2007
Harald Bothe, Wiesbaden, DE;
Yasuo Matsuzawa, Roswell, GA (US);
Bernhard Seiferling, Goldbach, DE;
Katharina Schmid, Aschaffenburg, DE;
Heike Arndt, Mömlingen, DE;
Harald Bothe, Wiesbaden, DE;
Yasuo Matsuzawa, Roswell, GA (US);
Bernhard Seiferling, Goldbach, DE;
Katharina Schmid, Aschaffenburg, DE;
Heike Arndt, Mömlingen, DE;
Novartis AG, Basel, CH;
Abstract
The invention relates to a process for the manufacture of a hydrophilic coating on a biomedical article, which comprises treating the biomedical article for a time period of ≦5 minutes with a solution of an organic solvent comprising a polyanionic compound with a number average molecular weight Mof >5000, wherein the solution comprises less than 10% by weight of water, and wherein the solution is devoid of a cationic polymer. The coated biomedical articles obtainable by the process of the invention have desirable characteristics regarding adherence to the substrate, durability, hydrophilicity, wettability, biocompatibility and permeability and are thus especially useful in the field of ophthalmic devices.