Patents by Inventor P. E. Anders Hansson

P. E. Anders Hansson 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).

  • Retention and drainage aid
    Patent number: 4565604
    Abstract: The present invention is directed to cross-linked, cationic polymers having a mixture of secondary and/or tertiary alkylene amine groups and alkylene quaternary ammonium groups pendant from a substantially completely saturated hydrocarbon polymer chain and to the use of said polymers as retention and drainage aids in paper making processes.
    Type: Grant
    Filed: December 31, 1984
    Date of Patent: January 21, 1986
    Assignee: W. R. Grace & Co.
    Inventors: P. E. Anders Hansson, Felek Jachimowicz
  • Process for the preparation of polymeric amine containing products
    Patent number: 4558101
    Abstract: A process of forming polymeric products having a high degree of pendant secondary or tertiary alkylene amino groups by contacting, in a liquid media, a hydrocarbon polymer having olefinic groups therein with a primary or secondary amine, carbon monoxide and hydrogen in the presence of a catalytic amount of a Group VIII metal compound.
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: December 10, 1985
    Assignee: W. R. Grace & Co.
    Inventors: Felek Jachimowicz, P. E. Anders Hansson