Patents by Inventor Frederic Roquefeuil

Frederic Roquefeuil 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).

  • Refractory material based on polycrystalline alumina
    Publication number: 20050150430
    Abstract: The invention concerns a refactory material based on corundum treated by electrofusion consisting of beads of diameter ranging between 50 ?m and 5 mm, having a total pore ratio ranging between 10 and 50 % of the volume of the beads, the sealed porosity representing from 80 to 98% of the total porosity. The inventive material is in particular designed for spray-applied refractory concrete.
    Type: Application
    Filed: April 3, 2003
    Publication date: July 14, 2005
    Inventors: Florent Bourlier, Frederic Roquefeuil