Patents by Inventor Vladimir Cukan

Vladimir Cukan 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: 6387342
    Abstract: A method of making a compound selected from metal and silicon carbides and nitrides includes the steps of providing a solution of a coal-derived material in a solvent, the coal-derived material having a composition, free of solvent, of 70 to 91 percent by mass of carbon, 2 to 6 percent by mass of hydrogen and 3 to 20 percent by mass of oxygen, and a source of an oxide of silicon or the metal, causing the coal-derived material in solution and the source of the oxide to interact, removing the solvent to form a precursor and heat treating the precursor to produce the compound.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: May 14, 2002
    Assignee: CSIR
    Inventors: David Lewis Morgan, Vladimir Cukan
  • Patent number: 5523269
    Abstract: A method of making a compound selected from metal and silicon carbides and nitrides includes the steps of providing a solution of a coal-derived material in a solvent, the coal-derived material having a composition, free of solvent, of 70 to 91 percent by mass of carbon, 2 to 6 percent by mass of hydrogen and 3 to 20 percent by mass of oxygen, and a source of an oxide of silicon or the metal, causing the coal-derived material in solution and the source of the oxide to interact, removing the solvent to form a precursor and heat treating the precursor to produce the compound.
    Type: Grant
    Filed: September 14, 1994
    Date of Patent: June 4, 1996
    Assignee: Enerkom (Proprietary) Limited
    Inventors: David L. Morgan, Vladimir Cukan
  • Patent number: 5340511
    Abstract: A method of producing carbon fiber includes the steps of providing a solution of a coal-derived material in a solvent, typically dimethylformamide, adding polyethylene oxide having a molecular weight of at least 3.times.10.sup.6 daltons to the solution to provide a spinning solution, spinning the spinning solution into a fiber and causing the fiber to gel, typically by contacting it with a gelling solvent. The coal-derived material will have a composition, free of solvent, of 70 to 91 percent by mass of carbon, 2 to 6 percent by mass of hydrogen and 3 to 20 percent by mass of oxygen.
    Type: Grant
    Filed: August 16, 1993
    Date of Patent: August 23, 1994
    Assignee: Enerkom (Proprietary Limited
    Inventors: David L. Morgan, Vladimir Cukan, Klaus Frielingsdorf