Patents by Inventor Gilbert Margeriat

Gilbert Margeriat 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).

  • Preparation of alkylmonohydrogenohalogenosilanes by redistribution followed by distillation and associated device
    Patent number: 6245926
    Abstract: The invention concerns a method for obtaining alkylmonohydrogenohalogenosilanes (AHHS), for example Me2HSiCl.Said AHHS are prepared by redistribution from MeHSiCl2 and Me3HSiCl in the presence of a catalyst such as AlCl3, which can start a parasitic disproportionation which affects the AHHS produced. In order to avoid this, the method consists in using an inhibitor which neutralizes AlCl3 after redistribution, The problem which still prevails and on which the present invention is based is related to the fact that during distillation, which aims at separating the required AHHS, the latter are again subjected to the parasitic disproportionation.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: June 12, 2001
    Assignee: Rhodia Chimie
    Inventors: Jean-Jacques Charrin, Pascale Colin, Raphael Guinamard, Françoise Igersheim, Gilbert Margeriat