Patents by Inventor Helmut Rinnerthaler

Helmut Rinnerthaler 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).

  • Polypropylene film structure having increased life time
    Patent number: 11591444
    Abstract: The present invention refers to a structure comprising a biaxially oriented polypropylene (BOPP) film having at least one layer comprising a homopolymer of propylene which layer is in contact with an oil phase, the homopolymer of propylene has a) a content of isotactic pentads in the range from 95% to 98%, and b) a content of ash of not more than 30 ppm, based on the total weight of the homopolymer of propylene, characterized in that the oil phase has an absorbance value of ?0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity. The present invention further refers to the use of a biaxially oriented polypropylene (BOPP) film for making capacitors comprising said structure, wherein the oil phase has an absorbance value of ?0.
    Type: Grant
    Filed: October 24, 2017
    Date of Patent: February 28, 2023
    Assignee: Borealis AG
    Inventors: Franciscus Jacobs, Guido Boelaers, Dietrich Gloger, Helmut Rinnerthaler
  • POLYPROPYLENE FILM STRUCTURE HAVING INCREASED LIFE TIME
    Publication number: 20200040150
    Abstract: The present invention refers to a structure comprising a biaxially oriented polypropylene (BOPP) film having at least one layer comprising a homopolymer of propylene which layer is in contact with an oil phase, the homopolymer of propylene has a) a content of isotactic pentads in the range from 95% to 98%, and b) a content of ash of not more than 30 ppm, based on the total weight of the homopolymer of propylene, characterized in that the oil phase has an absorbance value of ?0.1, relative to the pure oil, as determined spectrophotometrically at a wavelength of 860 nm by the reduction of transmitted light intensity. The present invention further refers to the use of a biaxially oriented polypropylene (BOPP) film for making capacitors comprising said structure, wherein the oil phase has an absorbance value of ?0.
    Type: Application
    Filed: October 24, 2017
    Publication date: February 6, 2020
    Inventors: Franciscus Jacobs, Guido Boelaers, Dietrich Gloger, Helmut Rinnerthaler