Patents by Inventor Renaud Briod

Renaud Briod 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).

  • Patent number: 5711906
    Abstract: The invention concerns a method of manufacturing a black zirconia-based article, characterized in that it includes successive steps consisting of: producing a first mixture comprising a zirconia powder, 3 to 70% by weight of a stabilizer selected from the group of oxides comprising yttrium oxide, magnesium oxide, cerium oxide and calcium oxide, 1% to 10% by weight of a pigment selected from the group formed on the one hand by a cobalt oxide and iron oxide powder and on the other hand, by a spinel CoFe.sub.2 O.sub.4 powder; producing a second mixture comprising said first mixture and a binder; producing a granulated mixture by granulating said second mixture; forming a rough model by giving said second granulated mixture the shape of the desired article; sintering in air for at least 30 minutes at a temperature less than 1,400.degree. C. when said pigment is a cobalt oxide and iron oxide powder and less than 1,600.degree. C. when the pigment is a spinel CoFe.sub.2 O.sub.
    Type: Grant
    Filed: April 17, 1995
    Date of Patent: January 27, 1998
    Assignee: Asulab S.A.
    Inventor: Renaud Briod