Patents by Inventor Rolland Perraudin

Rolland Perraudin 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).

  • High porosity silicocalcareous mass
    Patent number: 4721698
    Abstract: A high porosity silicocalcareous mass is obtained by using in at least partial replacement of the usual silica, amorphous ultrafine synthetic silica particles having a specific surface between 150 and 300 m.sup.2 per gram, and a high absorption capacity, and optionally adding nonreactive synthetic fiber of either inorganic or organic origin to the mixture containing the particles. The high-porosity silicocalcareous mass can be used as a lining material for containers, which are intended for storing liquified or dissolved gases and also as an insulation material, such as sound insulation in building construction.
    Type: Grant
    Filed: April 4, 1986
    Date of Patent: January 26, 1988
    Assignee: L'Air Liquide--Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Maurice Bruni, Georges Delode, Rolland Perraudin
  • Preparation and use of high porosity silicocalcareous mass
    Patent number: 4467040
    Abstract: A high porosity silicocalcareous mass is obtained by using in at least partial replacement of the usual silica, amorphous ultrafine synthetic silica particles having a specific surface between 150 and 300 m.sup.2 per gram, and a high absorption capacity, and optionally adding nonreactive synthetic fibers of either inorganic or organic origin to the mixture containing the particles. The high-porosity silicocalcareous mass can be used as a lining material for containers, which are intended for storing liquified or dissolved gases and also as an insulation material, such as sound insulation in building construction.
    Type: Grant
    Filed: May 11, 1982
    Date of Patent: August 21, 1984
    Assignee: L'Air Liquide - Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
    Inventors: Maurice Bruni, Georges Delode, Rolland Perraudin
  • Silicocalcareous mass with high porosity and its preparation
    Patent number: 4467041
    Abstract: A silicocalcareous mass with high porosity is obtained by using, in at least partial replacement of the usual silica, ultrafine synthetic silica with a large specific surface of 200 to 500 m.sup.2 per gram to a paste of lime and silica, and possibly adding nonreactive synthetic fibers of organic or inorganic origin. The silicocalcareous mass with high porosity can be used in the field of lining materials for containers intended to store dissolved gases and in the field of insulation materials.
    Type: Grant
    Filed: December 14, 1981
    Date of Patent: August 21, 1984
    Assignee: L'Air Liquide - Societe Anonyme pour l'Etude et l'Exploitation des Procedes George Claude
    Inventors: Maurice Bruni, Georges Delode, Rolland Perraudin