Patents by Inventor Isabel A. Pipping

Isabel A. Pipping 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 treating waste material
    Patent number: 5034131
    Abstract: The invention relates to a method and apparatus for treating waste material mass in a reactor comprising gas distribution members (2, 22), heating members (4, 23) and mixing members (6, 25) for the waste material mass, as well as a waste mass feed member (9, 31) and discharge opening (11, 34). According to the invention, the decomposition of the waste mass is intensified by heating the mass by means of the heating members (4, 23) connected to the gas distribution members (2, 22), by conducting gas onto the surfaces of the heating members (4, 23).
    Type: Grant
    Filed: November 27, 1989
    Date of Patent: July 23, 1991
    Assignee: Outokumpu Oy
    Inventors: Arto I. Stenroos, Isabel A. Pipping