Patents by Inventor Marcel Lorang

Marcel Lorang 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 obtaining photostable valentinite and valentinite thus obtained
    Patent number: 4391792
    Abstract: The invention relates to a process for obtaining photostable valentinite and to valentinite obtained by said process.The process consists in carrying out a basic hydrolysis of antimony trichloride at a temperature comprised between about 80.degree. and 100.degree. C. with a weight ratio of H.sub.2 O/Sb.sub.2 O.sub.3 equal to or greater than about 10.Obtention of photostable valentinite.
    Type: Grant
    Filed: August 12, 1981
    Date of Patent: July 5, 1983
    Assignee: Bureau de Recherches Geologiques et Minieres
    Inventors: Rene Bloise, Marcel Lorang, Georges Morizot, Genevieve Boissonnade