Patents by Inventor Folke G. Tjerneld

Folke G. Tjerneld 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).

  • Composition for use in a twophase or multiphase system
    Patent number: 4740304
    Abstract: Composition for use in a twophase or a multiphase system for extraction, purification, concentration and/or separation of biological substances. The composition is characterized in that it contains hydroxyalkyl starch with a degree of substitution in respect of hydroxyalkyl groups of more than 0.02 per glucose unit on an average and with an average molecular weight lower than 800000, preferably at most 400000 and most preferably at most 250000.
    Type: Grant
    Filed: August 6, 1986
    Date of Patent: April 26, 1988
    Assignee: Perstorp AB
    Inventors: Folke G. Tjerneld, Gote O. Johansson