Patents by Inventor Alfred Aigner

Alfred Aigner 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).

  • Process and apparatus for the granulation of sludges
    Patent number: 7207507
    Abstract: The invention relates to a process for the granulation of sludge- and optionally dust-form material, in which the material to be granulated is mixed with hydratable or hydraulically settable solids and water, which solids react exothermically with water and act as binder in the mixture, where the solids are allowed to hydrate or set fully or partly, and where the mixture containing the fully or partly hydrated or set solids is shaped into granules, where the solids and, if desired, dust-form materials to be granulated are wetted or moistened with water, and subsequently and/or at essentially the same time the solids are mixed with the material to be granulated. The invention also relates to an apparatus for carrying out the process.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: April 24, 2007
    Assignee: Voest-Alpine Industrieanlagenbau GmbH & Co.
    Inventors: Christoph Aichinger, Alfred Aigner, Guenter Schrey, Stefan Zettl
  • Method and device for granulating slurry and/or powdered material
    Patent number: 7185835
    Abstract: The invention relates to a process for the granulation of sludge- and/or dust-form material, in which the material to be granulated is mixed with hydratable or hydraulically settable solids and water, which solids react exothermically with water and act as binder in the mixture, where the solids are allowed to hydrate or set fully or partly, and where the mixture containing the fully or partly hydrated or set solids is shaped into granules, where the solids and, if desired, dust-form materials to be granulated are wetted or moistened with water, and subsequently and/or at essentially the same time the solids are mixed with the material to be granulated. The invention also relates to an apparatus for carrying out the process.
    Type: Grant
    Filed: March 8, 2001
    Date of Patent: March 6, 2007
    Assignee: Voest-Alpine Industrieanlagenbau GmbH & Co.
    Inventors: Christoph Aichinger, Alfred Aigner, Guenter Schrey, Stefan Zettl
  • PROCESS AND APPARATUS FOR THE GRANULATION OF SLUDGES
    Publication number: 20070023551
    Abstract: The invention relates to a process for the granulation of sludge- and optionally dust-form material, in which the material to be granulated is mixed with hydratable or hydraulically settable solids and water, which solids react exothermically with water and act as binder in the mixture, where the solids are allowed to hydrate or set fully or partly, and where the mixture containing the fully or partly hydrated or set solids is shaped into granules, where the solids and, if desired, dust-form materials to be granulated are wetted or moistened with water, and subsequently and/or at essentially the same time the solids are mixed with the material to be granulated. The invention also relates to an apparatus for carrying out the process.
    Type: Application
    Filed: October 4, 2006
    Publication date: February 1, 2007
    Inventors: Christoph Aichinger, Alfred Aigner, Guenter Schrey, Stefan Zettl
  • Method and device for granulating slurry and/or powdered material
    Publication number: 20040026814
    Abstract: The invention relates to a process for the granulation of sludge- and/or dust-form material, in which the material to be granulated is mixed with hydratable or hydraulically settable solids and water, which solids react exothermically with water and act as binder in the mixture, where the solids are allowed to hydrate or set fully or partly, and where the mixture containing the fully or partly hydrated or set solids is shaped into granules, where the solids and, if desired, dust-form materials to be granulated are wetted or moistened with water, and subsequently and/or at essentially the same time the solids are mixed with the material to be granulated. The invention also relates to an apparatus for carrying out the process.
    Type: Application
    Filed: September 11, 2003
    Publication date: February 12, 2004
    Inventors: Christoph Aichinger, Alfred Aigner, Guenter Schrey, Stefan Zettl