Patents by Inventor Hans J. Gron

Hans J. Gron 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).

  • Determination of vitamin D metabolites in dried blood
    Patent number: 9140711
    Abstract: Method and test kit for quantitative determination of Vitamin D metabolites in blood, wherein a predetermined amount of blood is pre-analytically immobilized on a solid sorption material. Thereby, hemolysis of the blood has no effect on the analysis of vitamin D metabolites. For quantitative analysis the dried blood spot on the sorption material is dissolved with an aqueous solvent buffer containing detergent, pH 7.0 to 10.0, and the vitamin D metabolites are eluted with a protic organic solution having a permittivity of less than 35. The eluate is analyzed for vitamin D metabolites using conventional methods.
    Type: Grant
    Filed: April 4, 2012
    Date of Patent: September 22, 2015
    Assignee: Immundiagnostik AG
    Inventors: Franz P. Armbruster, Hans J. Gron, Claudia Schumann