Patents by Inventor Philippe Marcel Rene Tirmarche

Philippe Marcel Rene Tirmarche 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 treating steel sheets for the purpose of enamelling the sheets
    Patent number: 4012239
    Abstract: For treating a steel sheet for subsequent enamelling of the sheet with one coat of enamel: After rolling the sheet, there is deposited thereon a coat of nickel and/or cobalt, a salt of said metals or mixtures of said salts. After drying, the sheet is annealed in a decarburizing atmosphere so as to substantially totally decarburize it and, during the cooling of the annealing cycle, the coated sheet is subjected to the action of an oxidizing atmosphere containing 2 to 7% of water vapor and having an H.sub.2 /H.sub. 2 O ratio which is less than 6.
    Type: Grant
    Filed: March 6, 1975
    Date of Patent: March 15, 1977
    Assignee: Union Siserurgique du Nord et de l'Est de la France, par abreviation "USINOR"
    Inventors: Charles Georges Henri Brun, Philippe Marcel Rene Tirmarche