Patents by Inventor Sanna Virtanen

Sanna Virtanen 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).

  • Surface-modified cellulose nanofibres, bio composite resin composition and method for producing the same
    Patent number: 10266688
    Abstract: The present invention relates to surface-modified cellulose nanofibers, which are used to improve fiber-matrix adhesion, resulting in biodegradable nanofibrillated cellulose (NFC)-polyvinyl alcohol (PVOH) composites, which can be used to form structures such as films, with excellent mechanical performance. Particularly, the present invention relates to a bio composite resin composition wherein the surface of cellulose nanofibers have been chemically modified, a method for producing such composite resin composition and a casting-sheet composite body.
    Type: Grant
    Filed: September 8, 2014
    Date of Patent: April 23, 2019
    Assignee: Teknologian tutkimuskeskus VTT Oy
    Inventors: Sanna Virtanen, Sauli Vuoti, Panu Lahtinen, Harri Setälä
  • Surface-modified cellulose nanofibres, bio composite resin composition and method for producing the same
    Publication number: 20160208087
    Abstract: The present invention relates to surface-modified cellulose nanofibres, which are used to improve fibre-matrix adhesion, resulting in biodegradable nanofibrillated cellulose (NFC)-polyvinyl alcohol (PVOH) composites, which can be used to form structures such as films, with excellent mechanical performance. Particularly, the present invention relates to a bio composite resin composition wherein the surface of cellulose nanofibres have been chemically modified, a method for producing such composite resin composition and a casting-sheet composite body.
    Type: Application
    Filed: September 8, 2014
    Publication date: July 21, 2016
    Applicant: Teknologian tutkimuskeskus VTT Oy
    Inventors: Sanna Virtanen, Sauli Vuoti, Panu Lahtinen, Harri Setälä