Patents by Inventor Richard T. Divis

Richard T. Divis 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).

  • Apparatus for producing carbon black
    Patent number: 4692312
    Abstract: A reactor for the production of carbon black is disclosed which is characterized by axial flow of combustion gases and sequential converging sections for sequentially accelerating the hot combustion gases used to drive the pyrolysis reaction.
    Type: Grant
    Filed: April 14, 1986
    Date of Patent: September 8, 1987
    Assignee: Phillips Petroleum Company
    Inventors: Meredith N. Dilbert, Glenn J. Forseth, William R. Jones, Jr., Richard T. Divis
  • Process for producing carbon black
    Patent number: 4601892
    Abstract: A generally cylindrical carbon black reactor for the production of soft carbon blacks is modified to produce a wider range of products by the installation of a choke.
    Type: Grant
    Filed: March 30, 1983
    Date of Patent: July 22, 1986
    Assignee: Phillips Petroleum Company
    Inventors: C. Jack Hart, Lawrence K. Murray, David L. Rogers, Richard T. Divis
  • Changing oil tubes in a carbon black reactor
    Patent number: 4585644
    Abstract: A steam line is connected to the oil lines supplying feed to a carbon black reactor and valves are provided in each of the steam and oil lines so that either or both steam and oil can be fed to the oil tube emitting feed into the reactor. To change an oil nozzle without interrupting production, oil flow to a single nozzle is cut off and steam flow is provided while the nozzle is removed from the reactor. Steam flow is again provided as the replacement nozzle is inserted into the reactor and when it is in place, steam is cut off and oil flow resumed.
    Type: Grant
    Filed: June 4, 1984
    Date of Patent: April 29, 1986
    Assignee: Phillips Petroleum Company
    Inventors: Richard T. Divis, William R. Jones
  • Process for producing carbon black
    Patent number: 4582695
    Abstract: A reactor for the production of carbon black is disclosed which is characterized by axial flow of combustion gases and sequential converging sections for sequentially accelerating the hot combustion gases used to drive the pyrolysis reaction.
    Type: Grant
    Filed: September 19, 1984
    Date of Patent: April 15, 1986
    Assignee: Phillips Petroleum Company
    Inventors: Meredith N. Dilbert, Glenn J. Forseth, William R. Jones, Richard T. Divis