Patents by Inventor John Burkhard

John Burkhard 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 continuous preparation of 3-halopropylorganosilanes
    Patent number: 6242630
    Abstract: A process for the continuous preparation of 3-halopropylorganosilanes of the general structure RbH3-a-bXaSiCH2CH2CH2Y  (III), where: R is CH3, C2H5, C3H7, OCH3, OC2H5 or OC3H7, X is F, Cl, Br or I, Y is F, Cl, Br or I, and a and b are each one of the numbers 0, 1, 2 or 3 and the sum a+b is 1, 2 or 3, comprising reacting, as starting materials, an allyl halide with a silane carrying at least one H atom, wherein the starting materials are present in stoichiometric amounts or one of the starting materials is present in substoichiometric amounts, wherein the reaction carried out is a partial reaction of from 10% to 80%, on a molar basis, of the starting materials, based on either material, when both are present in stoichiometric amounts, or based on the substoichiometric material.
    Type: Grant
    Filed: August 11, 1997
    Date of Patent: June 5, 2001
    Assignee: Huels Aktiengesellschaft
    Inventors: Stefan Bade, Uwe Schoen, John Burkhard, Franz-Michael Bollenrath, Norbert Hofmann, Hermann-Josef Korte, Hartwig Rauleder, Uwe Tanger