Patents by Inventor John J. Dunkleman

John J. Dunkleman 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).

  • Biomass shock pretreatment
    Patent number: 8765429
    Abstract: Methods and apparatus for treating biomass that may include introducing a biomass to a chamber; exposing the biomass in the chamber to a shock event to produce a shocked biomass; and transferring the shocked biomass from the chamber. In some aspects, the method may include pretreating the biomass with a chemical before introducing the biomass to the chamber and/or after transferring shocked biomass from the chamber.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: July 1, 2014
    Assignee: The Texas A & M University System
    Inventors: Mark T. Holtzapple, Maxine Jones Madison, Rocio Sierra Ramirez, Mark A Deimund, Matthew Falls, John J. Dunkleman
  • BIOMASS SHOCK PRETREATMENT
    Publication number: 20120252070
    Abstract: Methods and apparatus for treating biomass that may include introducing a biomass to a chamber; exposing the biomass in the chamber to a shock event to produce a shocked biomass; and transferring the shocked biomass from the chamber. In some aspects, the method may include pretreating the biomass with a chemical before introducing the biomass to the chamber and/or after transferring shocked biomass from the chamber.
    Type: Application
    Filed: March 28, 2012
    Publication date: October 4, 2012
    Applicant: THE TEXAS A&M UNIVERSITY SYSTEM
    Inventors: Mark T. HOLTZAPPLE, Maxine Jones MADISON, Rocio Sierra RAMIREZ, Mark A. DEIMUND, Matthew FALLS, John J. DUNKLEMAN
  • Fluidized bed catalytic coal gasification process
    Patent number: 4432773
    Abstract: Coal or similar carbonaceous solids impregnated with gasification catalyst constituents (16) are oxidized by contact with a gas containing between 2 volume percent and 21 volume percent oxygen at a temperature between 50.degree. C. and 250.degree. C. in an oxidation zone (24) and the resultant oxidized, catalyst impregnated solids are then gasified in a fluidized bed gasification zone (44) at an elevated pressure. The oxidation of the catalyst impregnated solids under these conditions insures that the bed density in the fluidized bed gasification zone will be relatively high even though the solids are gasified at elevated pressure and temperature.
    Type: Grant
    Filed: March 21, 1983
    Date of Patent: February 21, 1984
    Inventors: Charles A. Euker, Jr., Robert D. Wesselhoft, John J. Dunkleman, Dolores C. Aquino, Toby R. Gouker