Patents by Inventor Maurice Preumont

Maurice Preumont 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 the manufacture of crystals of sodium carbonate monohydrate
    Patent number: 4260594
    Abstract: Method for the manufacture of crystals of sodium carbonate monohydrate, comprises crystallizing sodium carbonate monohydrate from a carbonated aqueous liquor of sodium hydroxide above 35.degree. C. and separating the crystals of sodium carbonate monohydrate and a mother liquor. The sodium carbonate monohydrate is crystallized on crystalline seeds of sodium carbonate monohydrate obtained by evaporation, between 35.degree. and 107.5.degree. C., of a solution of sodium carbonate free from sodium hydroxide.
    Type: Grant
    Filed: March 24, 1978
    Date of Patent: April 7, 1981
    Assignee: Solvay & Cie.
    Inventors: Jean Verlaeten, Maurice Preumont