Patents by Inventor Sandra Ann Kupperblatt

Sandra Ann Kupperblatt 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).

  • High strength polyethylene film
    Patent number: 5744551
    Abstract: A blend comprising a mixture of two ethylene/alpha-olefin copolymers, said blend having a flow index in the range of about 5 to about 50 grams per 10 minutes; a melt flow ratio in the range of about 10 to about 50; a density in the range of 0.900 to 0.940 gram per cubic centimeter; a molecular weight in the range of about 98,000 to about 190,000; and an Mw/Mn ratio in the range of about 2 to about 8, said blend having been prepared by mixing first and second copolymers having about equal molecular weights, each copolymer being a copolymer of ethylene and an alpha-olefin having 3 to 8 carbon atoms, the first copolymer having a flow index in the range of about 5 to about 75 grams per 10 minutes; a melt flow ratio in the range of about 10 to about 50; a density in the range of 0.860 to 0.
    Type: Grant
    Filed: March 28, 1997
    Date of Patent: April 28, 1998
    Assignee: Union Carbide Chemicals & Plastics Technology Corporation
    Inventors: Sandra Ann Kupperblatt, Michael William Tilston, George Edward Ealer