Patents by Inventor Birgit Marrino

Birgit Marrino 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).

  • Methods for removing iron material from a substrate
    Patent number: 8946105
    Abstract: Methods of removing iron from a catalytic converter having an accumulation of one or more iron compounds and regenerating a catalytic converter are provided. A catalytic converter having an accumulation of one or more iron compounds embedded or deposited thereon can be treated with a substantially aqueous alkaline solution in which the substantially aqueous alkaline solution includes an antioxidant.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: February 3, 2015
    Assignee: Steag Energy Services GmbH
    Inventors: Birgit Marrino, Thies Hoffmann
  • METHODS FOR REMOVING IRON MATERIAL FROM A SUBSTRATE
    Publication number: 20140271383
    Abstract: Methods of removing iron from a catalytic converter having an accumulation of one or more iron compounds and regenerating a catalytic converter are provided. A catalytic converter having an accumulation of one or more iron compounds embedded or deposited thereon can be treated with a substantially aqueous alkaline solution in which the substantially aqueous alkaline solution includes an antioxidant.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: STEAG ENERGY SERVICES GMBH
    Inventors: Birgit Marrino, Thies Hoffmann
  • Method for treating SCR catalysts having accumulated iron compounds
    Patent number: 8389431
    Abstract: The present disclosure relates to methods for treating deactivated SCR catalysts having an increased SO2/SO3 conversion rate as a result of the accumulation of one or more iron compounds. The methods are characterized in that the catalysts are treated with an aqueous solution of an acidic reactive salt or hydrogen fluoride, with the addition of at least one antioxidant.
    Type: Grant
    Filed: November 3, 2011
    Date of Patent: March 5, 2013
    Assignee: Steag Energy Services GmbH
    Inventors: Thies Hoffmann, Birgit Marrino
  • METHOD FOR TREATING SCR CATALYSTS HAVING ACCUMULATED IRON COMPOUNDS
    Publication number: 20120053046
    Abstract: The present disclosure relates to methods for treating deactivated SCR catalysts having an increased SO2/SO3 conversion rate as a result of the accumulation of one or more iron compounds. The methods are characterized in that the catalysts are treated with an aqueous solution of an acidic reactive salt or hydrogen fluoride, with the addition of at least one antioxidant.
    Type: Application
    Filed: November 3, 2011
    Publication date: March 1, 2012
    Applicant: Steag Energy Services LLC
    Inventors: Thies Hoffmann, Birgit Marrino