Patents by Inventor Boleslaw L. Ignasiak

Boleslaw L. Ignasiak 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).

  • Method for recovery of hydrocarbons form contaminated soil or refuse materials
    Patent number: 5019245
    Abstract: A method is provided for separating an inert solid substantially inorganic fraction comprising sand or soil from a tarry or oily organic matter in a feedstock. The feedstock may be contaminated soil or tarry waste. The feedstock is combined with pulverized coal and water. The ratio (oil or tar to dry weight of coal) of about 1.0:10 to about 4.0:10 at a temperature in the range of 60.degree.-95.degree. C. The mixture is agitated, the coarse particles are removed, and up to about 0.10% by weight (based on weight of coal) of a frothing agent is added. The mixture is then subjected to flotation, and the froth is removed from the mixture.
    Type: Grant
    Filed: June 2, 1989
    Date of Patent: May 28, 1991
    Inventors: Teresa Ignasiak, Ali A. Turak, Wanda Pawlak, Boleslaw L. Ignasiak, Carlos R. Guerra, Melvin L. Zwillenberg
  • Process for removing pyritic sulfur from bituminous coals
    Patent number: 4966608
    Abstract: A process is provided for removing pyritic sulfur and lowering ash content of bituminous coals by grinding the feed coal, subjecting it to micro-agglomeration with a bridging liquid containing heavy oil, separating the microagglomerates and separating them to a water wash to remove suspended pyritic sulfur. In one embodiment the coal is subjected to a second micro-agglomeration step.
    Type: Grant
    Filed: August 9, 1988
    Date of Patent: October 30, 1990
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Wanda Pawlak, Jerzy S. Janiak, Ali A. Turak, Boleslaw L. Ignasiak
  • Method for providing improved solid fuels from agglomerated subbituminous coal
    Patent number: 4854940
    Abstract: A method is provided for separating agglomerated subbituminous coal and the heavy bridging liquid used to form the agglomerates. The separation is performed by contacting the agglomerates with inert gas or steam at a temperature in the range of 250.degree. to 350.degree. C. at substantially atmospheric pressure.
    Type: Grant
    Filed: February 16, 1988
    Date of Patent: August 8, 1989
    Assignee: Electric Power Research Institute, Inc.
    Inventors: Jerzy S. Janiak, Ali A. Turak, Wanda Pawlak, Boleslaw L. Ignasiak