Patents by Inventor Robert Laugier

Robert Laugier 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).

  • Cobalt oxide-based catalytic substances for the oxidation of ammonia
    Patent number: 4036935
    Abstract: The invention concerns catalytic substances for the oxidation of ammonia, for the production of nitric acid, comprising cobalt oxide as the main component. Such substances, besides cobalt oxide, also contain additives formed of aluminum oxide and possibly oxides of thorium, cerium, zinc and cadmium, the amount of aluminum oxide added being from 5% to 15% by weight of the finished substances and the amount of the other oxides being from 0 to 25% by weight of the finished substances; these substances are in particular shaped by pelleting or extrusion, dried and then calcined at temperatures of the order of from 900.degree. to 1000.degree. C. The advantages of these catalytic substances lie in a high degree of activity and a high level of strength, which are maintained during use thereof.
    Type: Grant
    Filed: February 9, 1976
    Date of Patent: July 19, 1977
    Assignee: Rhone-Progil
    Inventors: Jean-Louis Ray, Robert Laugier
  • Cobalt-oxide-based catalytic substances for the oxidation of ammonia
    Patent number: 3962138
    Abstract: The invention concerns catalytic substances for the oxidation of ammonia, for the production of nitric acid, comprising cobalt oxide as the main component. Such substances, besides cobalt oxide, also contain additives formed of aluminum oxide and possibly oxides of thorium, cerium, zinc and cadmium, the amount of aluminum oxide added being from 5% to 15% by weight of the finished substances and the amount of the other oxides being from 0 to 25% by weight of the finished substances; these substances are in particular shaped by pelleting or extrusion, dried and then calcined at temperatures of the order of from 900.degree. to 1000.degree.C. The advantages of these catalytic substances lie in a high degree of activity and a high level of strength, which are maintained during use thereof.
    Type: Grant
    Filed: March 18, 1974
    Date of Patent: June 8, 1976
    Assignee: Rhone-Progil
    Inventors: Jean-Louis Ray, Robert Laugier