Patents Assigned to Otisca Limited, Ltd.
  • Coal compositions
    Patent number: 4515602
    Abstract: Compositions containing coal and water which can be used as fuels and for other purposes such as feedstocks for coal gasification and liquefaction processes. In addition to the coal and water the composition may contain a minor amount of an organic or inorganic composition capable of reducing the viscosity of the coal-water system.
    Type: Grant
    Filed: June 10, 1982
    Date of Patent: May 7, 1985
    Assignee: Otisca Limited, Ltd.
    Inventors: Douglas V. Keller, Jr., Frederick J. Simmons