Patents by Inventor John P. James

John P. James 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 and apparatus for classifying solids and transporting solids-laden fluid
    Patent number: 4213856
    Abstract: A method and apparatus for classifying solids and transporting a solids-laden fluid containing large particle size solids which will tend to plug a tubular transport means and small particle size solids which will pass through the transport means without plugging, including passing the solids-laden fluid through a screening means and removing therefrom large particle size solids having a maximum dimension greater the internal diameter of the fluid transport means while passing through the screening means the solids-laden fluid containing small particle size solids having a maximum dimension smaller than the internal diameter of the fluid transport means and thereafter passing the solids-laden fluid containing the small particle size solids through the fluid transport means.
    Type: Grant
    Filed: December 1, 1978
    Date of Patent: July 22, 1980
    Assignee: Phillips Petroleum Company
    Inventors: Larry V. Blake, Donald E. Womeldorph, Jr., Oliver M. Surber, John P. James
  • Recycle of isoparaffin-butylene hydrocarbon to isoparaffin-propylene alkylation reaction
    Patent number: 4008292
    Abstract: An alkylation process and apparatus are disclosed wherein a butylene alkylation and a separate propylene alkylation are carried out and in which a portion of the hydrocarbon effluent from the butylene, alkylation zone is introduced into the propylene alkylation zone.
    Type: Grant
    Filed: February 13, 1976
    Date of Patent: February 15, 1977
    Assignee: Phillips Petroleum Company
    Inventor: John P. James