Patents by Inventor Alfred Normand

Alfred Normand 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).

  • Apparatus for generating a reducing atmosphere for heat-treating installations
    Patent number: 4219528
    Abstract: A generator for producing an atmosphere of nitrogen containing hydrogen by racking ammonia and recycling a previously generated atmosphere that already had been used. The atmosphere generated by cracking, and the recovered atmosphere that previously had been used, are subjected in a reactor to a catalytic treatment at a temperature between 0.degree. and 600.degree. C. and then, after passing through a refrigeration arrangement, the resultant atmosphere is prepared for use. As one example the atmosphere is adapted to be used as a protective atmosphere for metallurgical heat-treating furnaces.
    Type: Grant
    Filed: July 6, 1977
    Date of Patent: August 26, 1980
    Assignee: Societe Chimique de la Grande Paroisse, Azote et Produits Chimiques
    Inventor: Alfred Normand
  • Method for generating a reducing atmosphere for heat-treating installations
    Patent number: 4069071
    Abstract: An atmosphere of nitrogen containing hydrogen is generated by cracking amia and recycling a previously generated atmosphere that already had been used. The atmosphere generated by cracking, and the recovered atmosphere that previously had been used, are subjected in a reactor to a catalytic treatment at a temperature between 0.degree. to 600.degree. C and then, after passing through a refrigeration arrangement, the resultant atmosphere is prepared for use. As one example, the atmosphere is adapted to be used as a protective atmosphere for metallurgical heat-treating furnaces.
    Type: Grant
    Filed: March 18, 1976
    Date of Patent: January 17, 1978
    Assignee: Societe Chimique de la Grande Paroisse, Azote et Produits Chimiques
    Inventor: Alfred Normand