Patents by Inventor Veronique Oliver

Veronique Oliver 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 co-sintering conductors of copper or copper-base alloys and their ceramic substrate of cordierite
    Patent number: 4915899
    Abstract: The invention comprises a process for co-sintering of conductors of copper or copper-based alloy and a ceramic substrate, the substrate being produced from a ceramic powder of cordierite type, having a sintering temperature of lower than 950.degree. C.The process comprises the following steps:(a) shaping of the ceramic substrate from a powder of cordierite type,(b) deposit of copper on the ceramic substrate, and(c) co-sintering heat treatment, during which the organic compounds are removed, the copper is regenerated in a reducing atmosphere, and co-sintering of the conductors and the substrate is carried out in a flow of moist inert gas with a plateau at a temperature of between 1065.degree. and 1080.degree. C.The process according to the invention makes it possible to produce substrates of cordierite with internal and external conductors.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: April 10, 1990
    Assignee: Pechiney Recherche Groupement d'Interet Economique
    Inventors: Veronique Oliver, Jean-Louis Guille, Jean-Claude Bernier, Claude Drapier