Patents by Inventor Hermannus Geert Gulers

Hermannus Geert Gulers 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).

  • Flow through cartridge for selecting an analyte online with high performance liquid chromatography
    Publication number: 20110008224
    Abstract: A flow through cartridge for solid phase extraction of an analyte from a liquid has a cartridge body bounding a passage for retaining a sorbent. The passage extends from a first end face to a second end face, opposite the first end face of the cartridge body. The cartridge body is composed of a core of a first material extending around the passage and sealing rings of a second material, extending around an axis of the passage at the first and second end faces. Surface portions of the sealing rings constituting surface portions of the first and second end faces. The first material is stronger and stiffer than the second material.
    Type: Application
    Filed: June 9, 2010
    Publication date: January 13, 2011
    Applicant: SPARK HOLLAND B.V.
    Inventor: Hermannus Geert Gulers