Patents by Inventor Christiaan J. A. Verwijlen

Christiaan J. A. Verwijlen 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 of providing a metal mirror on a surface manufactured from an acrylate synthetic resin or a methacrylate synthetic resin
    Patent number: 4639382
    Abstract: A method of providing a metal mirror on an article of acrylate or methacrylate synthetic resin in which the surface to be metallized is treated with a solution of tannin in a mixture of water and an organic solvent and the treated surface is then provided with a metal mirror by using an electroless metallization process.
    Type: Grant
    Filed: October 25, 1982
    Date of Patent: January 27, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Johannes J. Ponjee, Christiaan J. A. Verwijlen
  • Matrix and method of using an aliphatic alcohol coated silica glass matrix
    Patent number: 4534929
    Abstract: A matrix having a surface of silica glass which is suitable for the manufacture of articles of synthetic resin in which the surface of the matrix comprises a monolayer of an aliphatic alcohol, as well as a method of manufacturing articles having a surface of synthetic resin while using the matrix.
    Type: Grant
    Filed: July 1, 1983
    Date of Patent: August 13, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Johannes J. Ponjee, Christiaan J. A. Verwijlen
  • Method of photolithographically treating a substrate
    Patent number: 4529618
    Abstract: The invention relates to a method of photolithographically treating a substrate, in which a surface of the substrate is treated at least at the area at which it consists of an inorganic material with an organosilicon compound.In order to improve the adhesion of a photolacquer layer to be applied, the organosilicon compound used is a 3-aminopropyl-trialkoxysilane in the form of an aqueous solution.
    Type: Grant
    Filed: October 3, 1983
    Date of Patent: July 16, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Johannes J. Ponjee, Franciscus J. B. Smolders, Christiaan J. A. Verwijlen
  • Method of providing a metal layer on a substrate
    Patent number: 4521444
    Abstract: A method of providing a metal layer on a substrate having an ultra-smooth or microprofiled surface, in which the surface structure is reproduced in the metal layer. On the substrate surface which is hydrophilic or is made hydrophilic, preferably a monomolecular layer of alkoxysilylalkylthiol, an alkoxysilylalkylamine or a chlorosilylalkylthiol is provided as a bonding intermediary in a layer which is at most 15 molecules thick by contact with an atmosphere in which said substance is present in a vapor form. The metal layer is vapor-deposited thereon in a thickness of 50-300 nm.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: June 4, 1985
    Assignee: U.S. Philips Corporation
    Inventors: Johannes J. Ponjee, Johan W. A. Nelissen, Christiaan J. A. Verwijlen