Patents by Inventor Katarina Lagerstrom

Katarina Lagerstrom 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 phase binding assay
    Patent number: 5716854
    Abstract: An assay method comprising the step of binding a second substance to a first substance immobilized to a solid phase surface, the first substance being either a ligand or a species bound directly or indirectly thereto. The method is characterized in that the solid phase surface having the first substance immobilized thereto exhibits and electric charge, and that the reaction for binding the second substance to the first substance is performed at an ionic strength below 100 mM, and at such pH conditions that the electric charge of the second substance is opposite to that of the solid phase surface so that the second substance is electrostatically attracted by the solid phase surface to be concentrated thereto.
    Type: Grant
    Filed: April 1, 1993
    Date of Patent: February 10, 1998
    Assignee: Pharmacia Biosensor AB
    Inventors: Stefan Lof.ang.s, Inger Ronnberg, Katarina Lagerstrom