Patents by Inventor Eva Osterberg

Eva Osterberg 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).

  • Solid surface coated with a hydrophilic biopolymer-repellent outer layer and method of making such a surface
    Patent number: 5240994
    Abstract: A solid surface having anionic groups capable of reacting with a polyethylene imine substituted at least in part by at least 50% by weight of a hydrophilic nonionic polymer having a molecular weight within the range from about 400 to about 200,000 is provided with a hydrophilic biopolymer-repellent outer surface layer thereof by reacting such a polyethylene imine substituted by nonionic hydrophilic polymer with anionic groups on the solid surface, in an amount sufficient to produce biopolymer-repellent solid surface, and accordingly having low spontaneous adsorption of proteins and other biopolymers through electrostatic attraction and/or hydrophobic interaction.
    Type: Grant
    Filed: September 13, 1991
    Date of Patent: August 31, 1993
    Assignee: Berol Nobel AB
    Inventors: Carina Brink, Eva Osterberg, Krister Holmberg
  • Process for the transesterification of triglycerides in an aqueous microemulsion reaction medium in the presence of lipase enzyme
    Patent number: 4839287
    Abstract: A process is provided for the rapid transesterification of triglycerides with fatty acids in the presence of lipase enzyme, using an aqueous microemulsion reaction medium comprising a hydrophobic component, a surface-active component, and water.
    Type: Grant
    Filed: March 10, 1987
    Date of Patent: June 13, 1989
    Assignee: Berol Kemi AB
    Inventors: Krister Holmberg, Eva Osterberg