Patents by Inventor Martina Ebner

Martina Ebner 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 preparation of high-purity zirconium, hafnium, tantalum and niobium alkoxides
    Patent number: 7273943
    Abstract: A novel process for the preparation of high-purity zirconium, hafnium, tantalum and niobium alkoxides (alcoholates), novel tantalum and niobium compounds and a process for their preparation are provided. The process comprises the steps of mixing crude metal alkoxides M(OR)x having a halogen impurity of at least 0.05 wt. %, with an alcohol ROH, in which R is a C1-C12-alkyl radical, and subsequently or simultaneously metering in an excess of ammonia, based on the amount of mononuclear or polynuclear halogen-containing metal alkoxides.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: September 25, 2007
    Assignee: H. C. Starck GmbH
    Inventors: Knud Reuter, Friedrich Zell, Martina Ebner
  • Process for the preparation of high-purity zirconium, hafnium, tantalum and niobium alkoxides
    Publication number: 20070056468
    Abstract: A novel process for the preparation of high-purity zirconium, hafnium, tantalum and niobium alkoxides (alcoholates), novel tantalum and niobium compounds and a process for their preparation are provided. The process comprises the steps of mixing crude metal alkoxides M(OR)x having a halogen impurity of at least 0.05 wt. %, with an alcohol ROH, in which R is a C1-C12-alkyl radical, and subsequently or simultaneously metering in an excess of ammonia, based on the amount of mononuclear or polynuclear halogen-containing metal alkoxides.
    Type: Application
    Filed: August 24, 2006
    Publication date: March 15, 2007
    Applicant: H. C. Starck GmbH
    Inventors: Knud Reuter, Friedrich Zell, Martina Ebner