Patents by Inventor Lars Holmaas

Lars Holmaas 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).

  • Process for the production of DTPA-BIS anhydride
    Publication number: 20070117977
    Abstract: Process for the production of DTPA-bis(anhydride) by reacting DTPA with acetic anhydride in pyridine under elevated temperature wherein the molar amount of pyridine is equal to or less than 6 times the molar amount of DTPA.
    Type: Application
    Filed: December 16, 2004
    Publication date: May 24, 2007
    Inventors: Eli Andersen, Lars Holmaas, Vidar Olaisen
  • Process for iohexol manufacture
    Publication number: 20060178533
    Abstract: The present invention relates to a process for the manufacture of iohexol, 5-[N-(2,3-dihydroxypropyl)-acetamido]-N,N?-bis(2,3-dihydroxypropyl)-2,4,6-triiodoisophtalamide by selecting a solvent comprising a C1-C5-monoalkylether of a C3-C10 alkylene-glycol.
    Type: Application
    Filed: July 1, 2004
    Publication date: August 10, 2006
    Inventors: Lars Holmaas, Ole Homestad, Jan Cervenka, Khalid Hussain