Patents by Inventor Robert Joseph Priestley

Robert Joseph Priestley 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).

  • Beneficiation of phosphate rock
    Patent number: 4083929
    Abstract: Beneficiation of phosphate rock containing limestone is accomplished by calcining, cooling, slaking and separation of the slaked lime from the phosphate rock product. The cooling, slaking and separation operations are conducted in a fluid bed reactor.
    Type: Grant
    Filed: December 12, 1973
    Date of Patent: April 11, 1978
    Assignee: Dorr-Oliver Incorporated
    Inventor: Robert Joseph Priestley
  • Dilute phase waste incinerator
    Patent number: 4021184
    Abstract: A fluidized bed waste incinerator is operated with a space rate such that essentially the entire reactor chamber is occupied by a dilute fluidized bed. Particulate solids elutriated with the exhaust gases are returned to the reactor chamber to thereby conserve the heat generated in the reactor chamber.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: May 3, 1977
    Assignee: Dorr-Oliver Incorporated
    Inventor: Robert Joseph Priestley