Patents by Inventor Leon Cukrowski

Leon Cukrowski 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).

  • Gypsum composition
    Patent number: 5725656
    Abstract: This invention relates generally to a gypsum composition having improved setting and strength characteristics. More specifically, this invention relates to a gypsum composition comprising an acrylic latex and an aliphatic alcohol wherein the composition has a retarded setting rate. This gypsum composition may further comprise a melamine-formaldehyde polymer and/or a styrene butadiene latex. This invention further relates to an artificial marble gypsum composition.
    Type: Grant
    Filed: May 29, 1996
    Date of Patent: March 10, 1998
    Assignee: The Trustees of Colombia University in the City of New York
    Inventors: Semyon Shimanovich, Christian Meyer, Leon Cukrowski