Patents by Inventor Gerard Courbin

Gerard Courbin 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).

  • Material having high mechanical strength and density close to unity, the manufacture and uses thereof
    Patent number: 4522878
    Abstract: A material with high mechanical strength and a density close to 1 is obtained by:(a) dispersing on weight basis 10-15% of a melamine-formol resin, 10-50% of hollow microspheres, and optionally up to 60% of light aggregates, in water;(b) mixing the resultant dispersion in the presence of a cross-linking catalyst, e.g., ammonium chloride, for the melamine-formol resin, until a fluid paste is obtained; and(c) allowing said fluid paste to harden into the desired material.
    Type: Grant
    Filed: March 28, 1984
    Date of Patent: June 11, 1985
    Assignee: Institut Francais du Petrole
    Inventors: Madeleine Martin, Jean Lesage, Gerard Courbin, Alain Rivereau