Patents by Inventor Barbara Niekraszewicz

Barbara Niekraszewicz 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).

  • Use of a linear synthetic polymer to improve the properties of a cellulose shaped body derived from a tertiary amine oxide process
    Patent number: 6245837
    Abstract: The present invention relates to the use of a linear synthetic polymer having a molecular weight of from 5.103 to 1.107 to improve the strength, to reduce the fibrillation tendancy and to regulate the water absorption properties of a cellulose shaped body, derived from a dissolution of cellulose in a tertiary amine oxide. The linear synthetic polymer may be a polyalkylene, a polyalkylene glycol or a polyacrylate or polymetacrylate or its copolymers with other monomers.
    Type: Grant
    Filed: February 12, 1999
    Date of Patent: June 12, 2001
    Assignee: Akzo Nobel Surface Chemistry AB
    Inventors: Anders Cassel, Bogumil Laszkiewicz, Zbigniew Lewandowski, Barbara Niekraszewicz, Piotr Kulpinski