Patents by Inventor Waltraud Lager

Waltraud Lager 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).

  • Method and device for determining a concentration of fluidic fuels for use in fuel cells
    Publication number: 20020148284
    Abstract: The method determines the fuel concentration in fluidic fuels for fuel cells, and in particular the alcohol concentration in an alcohol/water mixture for fuel cells operated with the mixture, such as direct methanol fuel cells. The alcohol/water mixture is passed through a heating section at a constant flow rate, a known quantity of heat is supplied to the mixture, the temperature difference between the entry and exit of the heating section is measured and the alcohol concentration is determined therefrom.
    Type: Application
    Filed: April 11, 2002
    Publication date: October 17, 2002
    Inventors: Manfred Baldauf, Waltraud Lager, Walter Preidel
  • Implantable stimulating electrode
    Patent number: 5103837
    Abstract: The surface of an implantable, porous stimulating electrode particularly intended for use in pacemakers is provided with a thin coating of a hydrophilic polymer in which is embedded an anti-inflammatory steroid. The electrode reduces the postoperative increase in the stimulation threshold, as well as the growth of connective tissue, without any reduction in capacitance.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: April 14, 1992
    Assignee: Siemens Aktiengesellschaft
    Inventors: Erhard Weidlich, Waltraud Lager