Patents by Inventor Luc Bernard

Luc Bernard 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 manufacturing a cement mixture containing reinforcing fibers and products obtained therefrom
    Patent number: 5167710
    Abstract: Process for making a cement mixture containing fibers wherein a paste is formed by mixing cement and, per 100 parts by weight of cement, approximately 5 to 20 parts by weight of a first pulverized material of which the grains have an average diameter of between 1/5 and 1/10 of the average diameter of the grains of the cement and approximately 20 to 35 parts by weight of water. The paste is then mixed with reinforcing fibers. The paste may also include a second pulverized material the average grain diameter of which is between 1/5 and 1/10 of the average diameter of the first pulverized material. The invention further includes products made from a cement mixture manufactured according to one of the foregoing processes.
    Type: Grant
    Filed: September 6, 1990
    Date of Patent: December 1, 1992
    Assignee: Saint-Gobain Recherche
    Inventors: Michel Leroux, Francois Toutlemonde, Jean-Luc Bernard
  • Insulating produce made in situ, fibres used in its composition and a method of manufacture
    Patent number: 5077128
    Abstract: Fibres, particularly glass or rock wool fibres coated with a modified polyvinyl alcohol-based polymer and suitable for use as a base material to produce a surface coating on a backing by a simultaneous spraying of the coated fibres mixed with water and a cross-linking agent. A method of producing the fibres to make them suitable to be sprayed in the manner described is also provided.
    Type: Grant
    Filed: February 2, 1989
    Date of Patent: December 31, 1991
    Assignee: Isover Saint-Gobain
    Inventors: Jean-Luc Bernard, Serein Etienne
  • Insulating produce made in situ, fibres or particles used in its composition and a method of manufacture
    Patent number: 4849289
    Abstract: Fibres, particularly glass or rock wool fibres coated with a modified polyvinyl alcohol-based polymer and suitable for use as a base material to produce a surface coating on a backing by simultaneous spraying of the coated fibres mixed with water and a cross-linking agent. A method of producing the fibres to make them suitable to be sprayed in the manner described is also provided.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: July 18, 1989
    Assignee: Isover Saint-Gobain
    Inventors: Jean-Luc Bernard, Etienne Serein