Patents by Inventor Nicolaas J. J. Dekker

Nicolaas J. J. Dekker 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).

  • Electrically conductive steel-ceramic composite and process to manufacture it
    Patent number: 8349395
    Abstract: The invention relates to a electrically conductive steel-ceramic connection comprising a steel interconnector and an electrically conductive ceramic joining layer arranged thereon. The interconnector comprises a ferritic steel containing Cr in a quantity ranging from 18 to 24% by weight. The ceramic layer contains perovskite of a formula Ln1-xSrxMn1-yCoyO3-? or Ln1-xSrxFe1-yCoyO3-?, wherein 0.1?x?0.4, 0.1?y?0.6, 0???x/2 and Ln=La—Lu. The inventive steel-ceramic connection is usable for a high-temperature fuel cell and regularly exhibits good adhesive properties and a low transition resistance (initial transition resistance R approximately equal to 0.01 ?cm2). Said steel-ceramic connection makes it possible to advantageously introduce a ferritic steel into high-temperature fuel cells. The inventive method for producing said steel-ceramic connection consists in pre-treating an inserted ceramic powder exhibiting good sinterability during an assembly process and during the fuel cell operation.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: January 8, 2013
    Assignees: Forschungszentrum Jülich GmbH, Topsoe Fuel Cell A/S
    Inventors: Joachim Laatsch, Frank Tietz, Niels Christiansen, Petru Gordes, Gijsbertus Rietveld, Nicolaas J. J. Dekker