Patents by Inventor Serge R. De La Roche

Serge R. De La Roche 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).

  • Method for preparing a cation exchanger
    Patent number: 4495080
    Abstract: There is described a method for preparing a cation exchanger to remove metals from liquids they are contained in, which comprises adding to a silicic acid medium with a molecular weight which is preferably lower than 50,000, such a base which brings said medium at least to pH 8, preferably about pH 10, and forming a precipitate that comprises said cation exchanger.
    Type: Grant
    Filed: August 8, 1983
    Date of Patent: January 22, 1985
    Assignee: Societe internationale de Pulicite et d'Agences commerciales, enabrege: "Sipac"
    Inventors: Leon Petit, Serge R. De La Roche