Patents by Inventor Geir Brekke

Geir Brekke 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).

  • SYNTHESIS OF IODIXANOL IN WATER
    Publication number: 20110021832
    Abstract: This invention relates to the synthesis of iodixanol (1,3-bis(acetamido)-N,N?-bis[3,5-bis(2,3-dihydroxypropylaminocarbonyl)-2,4,6-triiodophenyl]-2-hydroxypropane), more specifically to the dimerisation of 5-acetamido-N,N?-bis(2,3-dihydroxypropyl)-2,4,6-triiodo-isophthalamide with water as solvent.
    Type: Application
    Filed: November 19, 2009
    Publication date: January 27, 2011
    Applicant: GE HEALTHCARE AS
    Inventors: GEIR BREKKE, OTTO ROGNE, TROND KJERNLI, TERJE SVENDSEN
  • Process for the production of iodinated organic x-ray contrast agents
    Patent number: 6232499
    Abstract: The present invention provides a process for the production of an organic iodinated X-ray contract agent, characterized in that process control comprises vibrational (e.g., infrared, Raman or preferably near-infrared) spectroscopic monitoring of the reaction mixture in at least one of the process steps, preferably one of the final reaction steps.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: May 15, 2001
    Assignee: Nycomed Imaging AS
    Inventors: Dick Malthe-Sørenssen, Anne Cathrine Schelver Hyni, Arne Aabye, Hans René Bjørsvik, Geir Brekke, Carl Einar Sjøgren