Patents Assigned to The University of North Dakota School of Engineering & Mines Foundation (UNDSEM Foundation)
  • Low-rank coal oil agglomeration
    Patent number: 5032146
    Abstract: A low-rank coal oil agglomeration process. High mineral content, a high ash content subbituminous coals are effectively agglomerated with a bridging oil which is partially water soluble and capable of entering the pore structure, and usually coal derived.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: July 16, 1991
    Assignee: The University of North Dakota School of Engineering & Mines Foundation (UNDSEM Foundation)
    Inventors: Curtis L. Knudson, Ronald C. Timpe