Patents by Inventor Dietrich Quast

Dietrich Quast 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).

  • Process for rendering silicone rubber contact lenses hydrophilic
    Patent number: 4332922
    Abstract: Process for rendering silicone rubber contact lenses hydrophilic by first reacting the silicone rubber with an oligomeric siloxane containing SiH groups in the presence of a catalyst and then subjecting the resulting equilibrated silicone rubber to a reaction with an aqueous base; or a silane addition reaction with a reactant containing C.dbd.C double bonds.
    Type: Grant
    Filed: July 18, 1980
    Date of Patent: June 1, 1982
    Assignee: Titmus Eurocon
    Inventors: Gerhard Kossmehl, Dietrich Quast, Horst Schafer