Patents by Inventor Dave Hendrickson

Dave Hendrickson 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: 10486105
    Abstract: A flow-through solid catalyst formed by coating a zeolite material on a metal or ceramic solid substrate. In some embodiments, the solid substrate is formed as flat plates, corrugated plates, or honeycomb blocks.
    Type: Grant
    Filed: November 12, 2018
    Date of Patent: November 26, 2019
    Assignee: 3D Clean Coal Emissions Stack, LLC
    Inventors: James Gary Davidson, Dave Hendrickson
  • Publication number: 20190076783
    Abstract: A flow-through solid catalyst formed by coating a zeolite material on a metal or ceramic solid substrate. In some embodiments, the solid substrate is formed as flat plates, corrugated plates, or honeycomb blocks.
    Type: Application
    Filed: November 12, 2018
    Publication date: March 14, 2019
    Inventors: James Gary Davidson, Dave Hendrickson
  • Patent number: 8333823
    Abstract: A method and system for producing metallic iron nuggets may include providing multiple layers of agglomerates, such as briquettes, balls and extrusions, of a reducible mixture of reducing material (such as carbonaceous material) and of a reducible iron bearing material (such as iron oxide) on a hearth material layer (such as carbonaceous material) and providing a coarse overlayer of carbonaceous material over at least some of the agglomerates. Heating the agglomerates of reducible mixture to 1425° C. or 1400° C. or 1375° C. results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: December 18, 2012
    Assignee: Nu-Iron Technology, LLC
    Inventors: Iwao Iwasaki, Richard F. Kiesel, David J. Englund, Dave Hendrickson
  • Publication number: 20110100162
    Abstract: A method and system for producing metallic iron nuggets may include providing multiple layers of agglomerates, such as briquettes, balls and extrusions, of a reducible mixture of reducing material (such as carbonaceous material) and of a reducible iron bearing material (such as iron oxide) on a hearth material layer (such as carbonaceous material) and providing a coarse overlayer of carbonaceous material over at least some of the agglomerates. Heating the agglomerates of reducible mixture to 1425° C. or 1400° C. or 1375° C. results in formation of an intermediate product of one or more metallic iron nuggets, which may have a sulfur content of less than 0.03%, and slag, which may have less than 5% mass MgO, which may have a ratio of percent by weight sulfur in the slag over percent by weight sulfur in the metallic nuggets of at least about 12 or at least about 15.
    Type: Application
    Filed: July 30, 2010
    Publication date: May 5, 2011
    Applicant: NU-IRON TECHNOLOGY, LLC
    Inventors: Iwao Iwasaki, Richard F. Kiesel, David J. Englund, Dave Hendrickson