Patents by Inventor Johan Selin

Johan Selin 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).

  • Cellulose carbamate solutions
    Patent number: 4526620
    Abstract: The invention relates to cellulose carbamate solutions having improved capacity for fiber spinning or film formation therefrom. The addition of urea to the aqueous alkali in which the cellulose carbamate is dissolved results in an increase in the amount of cellulose carbamate that can be dissolved and a decrease in the viscosity and clogging number of the solution as compared to such solutions without urea.
    Type: Grant
    Filed: November 30, 1983
    Date of Patent: July 2, 1985
    Assignee: Neste Oy
    Inventors: Johan Selin, Jouko Huttunen, Olli Turunen, Vidar Eklund, Kurt Ekman