Patents by Inventor Ganna Lyashenko

Ganna Lyashenko 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 producing polycarbonate polyols by the immortal polymerization of cyclic carbonates
    Patent number: 9260562
    Abstract: The invention relates to a process for the preparation of polycarbonate polyols, characterized in that cyclic carbonates are polymerized in the presence of DMC catalysts and chain-transfer agents consisting of polyether carbonate polyols.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: February 16, 2016
    Assignee: BAYER INTELLECTUAL PROPERTY GMBH
    Inventors: Thomas Ernst Müller, Christoph Gürtler, Anthony Kermagoret, Yvonne Dienes, Igor Busygin, Burkhard Köhler, Walter Leitner, Ganna Lyashenko