Patents by Inventor Gerardus Johannes Meinardus Lippits

Gerardus Johannes Meinardus Lippits 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 manufacturing printed circuit boards
    Patent number: 4085285
    Abstract: Manufacture of photosensitive material by a dispersion of particles of semiconducting metal oxide having a charge sign opposite to that of the substrate in the dispersion agent, which dispersion is provided on the substrate surface and adhered thereto. In a similar manner walls of a hole for electrical through-connections are made photosensitive as a pretreatment for metal-plating.
    Type: Grant
    Filed: August 6, 1976
    Date of Patent: April 18, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Gerardus Johannes Meinardus Lippits, Petrus Johannes Janssen, Henricus Antonius Debruijn, Johannes VAN Ruler
  • Method of manufacturing electrically conductive metal layers on substrates
    Patent number: 4084968
    Abstract: Method of metallizing, according to a pattern or uniformly, substrates which consist of a resin which contains either throughout its bulk or in a surface layer, a photosensitive semiconductive oxide, which after exposure to light is capable of depositing metal nuclei from a solution of copper ions or ions of a nobler metal, which nuclei are intensified in mass, while by way of pre-treatment the substrate is treated with a dipolar aprotic swelling agent and then with a chemical roughening agent.
    Type: Grant
    Filed: November 3, 1975
    Date of Patent: April 18, 1978
    Assignee: U.S. Philips Corporation
    Inventors: Casper Johannes Gerardus Ferdinand Janssen, Lambertus Postma, Gerardus Johannes Meinardus Lippits