Patents by Inventor Hynek Biedermann

Hynek Biedermann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method for modifying the surface of biomedical articles
    Patent number: 6878399
    Abstract: The invention relates to a process for coating a material surface, comprising the steps of: (a) providing an inorganic or organic bulk material; (b) providing one or more polyionic materials at least one of them comprising covalently bound initiator moieties for radical polymerization; (c) applying the polyionic material of step (b) to the bulk material of step (a), thereby forming a hydrophilic layer on the bulk material surface; and (d) graft polymerizing a hydrophilic monomer or macromonomer onto said polyionic material. The coated articles that are obtainable by the process of the invention have desirable characteristics regarding adherence to the substrate, durability, hydrophilicity, wettability, biocompatibility and permeability and are thus useful for the manufacture of biomedical articles such as ophthalmic devices.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: April 12, 2005
    Assignee: Novartis AG
    Inventors: Peter Chabrecek, Jörg Leukel, Hynek Biedermann, Dieter Lohmann
  • Method for modifying the surface of biomedical articles
    Publication number: 20030219533
    Abstract: The invention relates to a process for coating a material surface, comprising the steps of:
    Type: Application
    Filed: November 12, 2002
    Publication date: November 27, 2003
    Inventors: Peter Chabrecek, Jorg Leukel, Hynek Biedermann, Dieter Lohmann