Patents by Inventor Roland Kirchmayr

Roland Kirchmayr 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).

  • Patent number: 11168339
    Abstract: Process and systems are provided for anaerobic digestion of lignocellulosic feedstock into biogas and co-products, such as fibrous humid cake and a fine-particles slurry. The feedstock (e.g., grass straw) is typically first ground or milled. The feedstock is subjected to pelletizing or extruding to generate pellets (e.g., cubes) or extrudates. The pellets or extrudates may be fed to a hydrolysis unit or a digester, in dry form or wet form. Various chemicals may be added to improve the mechanical disintegration of the lignocellulosic structure of the feedstock, before, during, or after formation of pellets or extrudates. The biogas may be stored, sold, used, or further treated, such as via purification to produce pipeline-quality cellulosic methane. The fibrous humid cake and the fine-solids slurry have many potential uses. Other potential co-products include lignin, biochar, energy (as heat and/or electricity), fertilizers, soil or land conditioners, ammonium sulfate, ammonium hydroxide, and carbon dioxide.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: November 9, 2021
    Assignee: CBG Partners, LLC
    Inventors: Peter Stepany, John McKinney, Roland Kirchmayr
  • Patent number: 9085470
    Abstract: The invention relates to a method for removing ammonia or reducing ammonium from biogas plant fermentation liquids or biogas plant fermentation residues, wherein ammonia or ammonium is reduced by way of flash evaporation, separated from the biogas plant fermentation liquids or biogas plant fermentation residues, and removed as ammonia. The invention further relates to a device for performing said method.
    Type: Grant
    Filed: February 25, 2011
    Date of Patent: July 21, 2015
    Assignee: BDI—BIOENERGY INTERNATIONAL GMBH
    Inventors: Roland Kirchmayr, Michael Harasek, Christian Maier, Reinhold Waltenberger
  • Publication number: 20130047852
    Abstract: The invention relates to a method for removing ammonia or reducing ammonium from biogas plant fermentation liquids or biogas plant fermentation residues, wherein ammonia or ammonium is reduced by way of flash evaporation, separated from the biogas plant fermentation liquids or biogas plant fermentation residues, and removed as ammonia. The invention further relates to a device for performing said method.
    Type: Application
    Filed: February 25, 2011
    Publication date: February 28, 2013
    Applicant: RUDOLF GROSSFURTNER GMBH
    Inventors: Roland Kirchmayr, Michael Harasek, Christian Maier, Reinhold Waltenberger