Patents Assigned to SimTech
  • Patent number: 6901687
    Abstract: Disclosed is a domestic appliance, at least comprising an aluminum sole plate which is provided with a coating which is provided by means of a sol-gel process and wherein an intermediate layer is present between the aluminum sole plate and the sol-gel coating. The intermediate layer comprises a multi-layer structure. Also described is a method of manufacturing such a domestic appliance. The method comprises the steps of providing an aluminum substrate, applying a porous intermediate layer of aluminum oxide by electrochemical treatment of the aluminum sole plate in an electrolyte comprising a solution of phosphoric acid, applying a dense intermediate layer of aluminum oxide by electrochemical treatment in an electrolyte, and providing a sol-gel coating on the treated substrate.
    Type: Grant
    Filed: February 13, 2002
    Date of Patent: June 7, 2005
    Assignees: Koninklijke Philips Electronics N.V., SimTech
    Inventors: Leo Hubert Maria Krings, Gerard Cnossen, Youg Ling Wu, Soo-Kong Chang