Patents by Inventor Maria Niemi

Maria Niemi 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).

  • Processable poly(hydroxy acids)
    Patent number: 6559244
    Abstract: A processable poly(hydroxy acid) composition which has been stabilized by adding to the polymer during the melt processing stage 0.05-3% by weight of a peroxy compound the degradation of which produces one or more acid radicals, and which has good melt strength and elasticity. The melt strength is high enough to produce films with conventional methods as the film blowing method.
    Type: Grant
    Filed: October 16, 1995
    Date of Patent: May 6, 2003
    Assignee: Neste Oy
    Inventors: Anders Sodergard, Johan-Fredrik Selin, Maria Niemi, Carl-Johan Johansson, Kersin Meinander