Patents by Inventor Raymond Calas

Raymond Calas 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 the preparation of hydrogenosilanes
    Patent number: 4059608
    Abstract: A process for preparing hydrogenosilanes by hydrogenating disilanes, especially halogenated disilanes, under relatively mild reaction conditions is disclosed. The hydrogenation is effected in the presence of a catalytic system containing an aprotic compound and a nickel catalyst which consists essentially of finely divided nickel and is obtained by preliminary or in situ reduction of a nickel compound.
    Type: Grant
    Filed: March 4, 1977
    Date of Patent: November 22, 1977
    Assignee: Rhone-Poulenc Industries
    Inventors: Raymond Calas, Jacques Dunogues, Gerard Deleris, Marcel Lefort, Christian Simonnet