Patents by Inventor Donald Meisel

Donald Meisel 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).

  • Utilization of slag from coal gasification systems
    Patent number: 5166109
    Abstract: A low density aggregate product and method for making the same utilizing coal ash slag resulting from a typical coal gasification system wherein the resulting aggregate product has a lower density than the initial coal ash slag. The coal ash slag is combined with a small amount of a binder and then fired for a predetermined time and temperature to produce the aggregate. Also, by heating the coal ash slag and binder, a gaseous efflux is emitted to form interlaced channels throughout the aggregate which have a characteristic length and diameter.
    Type: Grant
    Filed: October 23, 1991
    Date of Patent: November 24, 1992
    Assignee: Electric Power Research Institute
    Inventors: Seymour B. Alpert, Donald Meisel, Vas Choudhry
  • Utilization of slag from coil gasification systems
    Patent number: 5091349
    Abstract: A low density aggregate product and method for making the same utilizing coal ash slag resulting from a typical coal gasification system wherein the resulting aggregate product has a lower density than the initial coal ash slag. The coal ash slag is combined with a small amount of a binder and then fired for a predetermined time and temperature to produce the aggregate. Also, by heating the coal ash slag and binder, a gaseous efflux is emitted to form interlaced channels throughout the aggregate which have a characteristic length and diameter.
    Type: Grant
    Filed: April 4, 1990
    Date of Patent: February 25, 1992
    Assignee: Electric Power Research Institute
    Inventors: Seymour B. Alpert, Donald Meisel, Vas Choudhry