Patents by Inventor Stephan Ruediger

Stephan Ruediger 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).

  • Publication number: 20110272889
    Abstract: A method for sealing a membrane module by introducing a seal or a sealing mass between a head plate holding a tube bundle and a mounting ring holding the head plate. Alternatively, a sealing mass containing quartz sand is proposed for sealing cracks in the head plate.
    Type: Application
    Filed: November 3, 2009
    Publication date: November 10, 2011
    Inventor: Stephan RĂ¼ediger Blum
  • Patent number: 7592287
    Abstract: The present invention is related to a method for preparing an amorphous metal fluoride of the formula MX+FX?? comprising the steps of a) providing a precursor, whereby the precursor comprises a structure having a formula of Mx+F(x??)?yBy; and b) reacting the precursor with a fluorinating agent generating the amorphous metal flouride having a formula of Mx+Fx??, whereby M is selected from the group comprising metals of the second, third and fourth main group and any subgroup of the periodic table, B is a coordinately bound group; x is any integer of 2 or 3; y is any integer between 1 and 3; ? is 0 to 0.1; and x??>y.
    Type: Grant
    Filed: January 7, 2004
    Date of Patent: September 22, 2009
    Assignee: Humboldt-Universitaet Zu Berlin
    Inventors: Erhard Kemnitz, Udo Gross, Stephan Ruediger
  • Publication number: 20080274037
    Abstract: The present invention is related to a method for preparing an X-ray amorphous or weakly crystalline metal oxide fluoride of a composition represented by the formula Ma+ObFc comprising the steps of b) providing a precursor, whereby the precursor is a fluorinated metal compound having a composition which is represented by the formula Ma+F(a?d)BdLxb) converting the precursor into an metal oxide/hydroxide fluoride; and c) calcinating the metal oxide/hydroxide fluoride having the formula Ma+OcHfFc to generate the X-ray amorphous or weakly crystalline metal oxide fluoride of the formula Ma+ObFc, whereby M is selected from the group comprising metals of the first, second, third and fourth main group and any subgroup of the periodic table; B is a group or an anion which is selected from the group comprising alkoxide, enolates, alkyl, chloride, bromide, iodide, nitrate, and organic acid anions; B is preferably an alkoxy group; L is a solvent other than water; a is any integer of 1, 2, 3, 4, 5 or 6, preferably 2 or 3;
    Type: Application
    Filed: December 5, 2005
    Publication date: November 6, 2008
    Applicant: HUMBOLDT-UNIVERSITAET ZU BERLIN
    Inventors: Udo Gross, Erhard Kemnitz, Stephan Ruediger
  • Publication number: 20060052649
    Abstract: The present invention is related to a method for preparing an amorphous metal fluoride of the formula MX+FX-? comprising the steps of a) providing a precursor, whereby the precursor comprises a structure having a formula of Mx+F(x-?)-yBy; and b) reacting the precursor with a fluorinating agent generating the amorphous metal flouride having a formula of Mx+Fx-?, whereby M is selected from the group comprising metals of the second, third and fourth main group and any subgroup of the periodic table, B is a coordinately bound group; x is any integer of 2 or 3; y is any integer between 1 and 3; ? is 0 to 0.1; and x??>y.
    Type: Application
    Filed: January 7, 2004
    Publication date: March 9, 2006
    Inventors: Erhard Kemnitz, Udo Gross, Stephan Ruediger