Patents by Inventor Eckehard Walitza

Eckehard Walitza 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).

  • Hollow fiber membrane module
    Patent number: 7128837
    Abstract: The present invention relates to hollow fiber membrane modules for use as “immersion modules” in filtration and/or dialysis methods, in particular whenever impairments due to fouling effects are expected from the use of liquids that are contaminated or lead to deposits. The hollow fiber membrane module comprises at least one housing and a plurality of tubular hollow fiber membranes which are arranged parallel to one another in and/or around the housing in a packing space, wherein the volumetric ratio of all the hollow fiber membranes arranged in the packing space to the packing space is less than 20%. Methods for producing such hollow fiber membrane modules are also provided.
    Type: Grant
    Filed: February 8, 2006
    Date of Patent: October 31, 2006
    Assignee: Hoffmann-La Roche Inc.
    Inventors: Ulrich Behrendt, Reinhard Gergen, Franz-Josef Gerner, Gerhard Herres, Berthold Szperalski, Eckehard Walitza, Wolfram Weber
  • Hollow fiber membrane module
    Publication number: 20060124531
    Abstract: The present invention relates to hollow fiber membrane modules for use as “immersion modules” in filtration and/or dialysis methods, in particular whenever impairments due to fouling effects are expected from the use of liquids that are contaminated or lead to deposits. The hollow fiber membrane module comprises at least one housing and a plurality of tubular hollow fiber membranes which are arranged parallel to one another in and/or around the housing in a packing space, wherein the volumetric ratio of all the hollow fiber membranes arranged in the packing space to the packing space is less than 20%. Methods for producing such hollow fiber membrane modules are also provided.
    Type: Application
    Filed: February 8, 2006
    Publication date: June 15, 2006
    Inventors: Ulrich Behrendt, Reinhard Gergen, Franz-Josef Gerner, Gerhard Herres, Berthold Szperalski, Eckehard Walitza, Wolfram Weber
  • Device and method for monitoring and controlling biologically active fluids
    Patent number: 6677132
    Abstract: The present invention relates to a device and a method for determining the concentration of organisms in a fluid, where metabolite parameters are recorded by means of a data acquisition unit and subsequently converted.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: January 13, 2004
    Assignee: Fraunhofer-Gesellschaft zur Förderung der Angewandten-Forschung E.V.
    Inventors: Thomas Hofler, Peter Holzhauer, Eckehard Walitza
  • Device for monitoring a processing liquid
    Patent number: 6555379
    Abstract: A device for monitoring a processing liquid comprising at least one sensor for generating at least one monitoring signal, and a device for processing the monitoring signal and for generating a control signal for directly or indirectly influencing the composition or condition of the processing liquid. A device is also provided for detecting, storing, and maintaining the reliability of performance of the sensor. In addition, actuators are provided for converting given criteria or specified values.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: April 29, 2003
    Assignee: Filterwerk Mann & Hummel GmbH
    Inventors: Karl-Guenter Bremer, Thomas Hoefler, Peter Holzhauer, Thomas Netsch, Eckehard Walitza
  • Hollow fiber membrane module
    Publication number: 20020179516
    Abstract: The present invention relates to hollow fiber membrane modules for use as “immersion modules” in filtration and/or dialysis methods, in particular whenever impairments due to fouling effects are expected from the use of liquids that are contaminated or lead to deposits. The hollow fiber membrane module comprises at least one housing and a plurality of tubular hollow fiber membranes which are arranged parallel to one another in and/or around the housing in a packing space, wherein the volumetric ratio of all the hollow fiber membranes arranged in the packing space to the packing space is less than 20%. Methods for producing such hollow fiber membrane modules are also provided.
    Type: Application
    Filed: February 14, 2002
    Publication date: December 5, 2002
    Inventors: Ulrich Behrendt, Reinhard Gergen, Franz-Josef Gerner, Gerhard Herres, Berthold Szperalski, Eckehard Walitza, Wolfram Weber
  • Air humidification
    Patent number: 6474628
    Abstract: The present invention relates to an air humidifier and to a method for humidifying air, the use of special devices enabling air to be humidified with sterile water. A large contact area between water and air is combined with low losses of flow pressure. A membrane contactor having at least one tube membrane embedded in a hydrophilic, porous body comprises the air humidifier. The present invention enables use of coarse filters to ensure that the water is dispersed over a large surface area.
    Type: Grant
    Filed: December 7, 2000
    Date of Patent: November 5, 2002
    Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
    Inventors: Norbert Stroh, Eckehard Walitza