Patents by Inventor Ronald C. Hurst

Ronald C. Hurst 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).

  • Carbon blacks
    Patent number: 6156837
    Abstract: A process for producing carbon blacks comprised of mixing an oxidant, primary fuel, and carbon black feedstock to form carbon black particles and aggregates, passing the mixture through a reactor, cooling, separating, and recovering the carbon black product. The improvement comprises the addition of a secondary oxidant-containing stream to the reactor such that the secondary oxidant stream does not interfere with the formation of the carbon black particles and aggregates in the reactor. Also disclosed are new carbon black products defined by the following parameters:35 mg/g.ltoreq.I.sub.2 No..ltoreq.65 mg/g30 m.sup.2 g.ltoreq.CTAB.ltoreq.55 m.sup.2 g1.12 mg/m.sup.2 .ltoreq.I.sub.2 No./CTAB ratioTint.ltoreq.65%75 cc/100 g.ltoreq.CDBP.ltoreq.95 cc/100 gAlso disclosed are rubber and/or plastic compositions containing the new carbon blacks.
    Type: Grant
    Filed: August 23, 1993
    Date of Patent: December 5, 2000
    Assignee: Cabot Corporation
    Inventors: John M. Branan, Jr., Bin Chung, Frank J. Hrach, Jr., Ronald C. Hurst, David J. Kaul, Sergio A. Montes, William L. Sifleet, Daniel W. Weaver, Jay Zimmer
  • Process for producing carbon black
    Patent number: 4879104
    Abstract: Disclosed is a process for producing carbon blacks which for a given surface area are characterized by having lower tinting strength and higher structure.
    Type: Grant
    Filed: June 16, 1987
    Date of Patent: November 7, 1989
    Assignee: Cabot Corporation
    Inventors: Steven J. List, Ronald C. Hurst
  • Production of high surface area carbon blacks
    Patent number: 4374113
    Abstract: This disclosure relates to an improved furnace process for producing carbon blacks by the incomplete combustion of hydrocarbonaceous feedstock wherein the resultant blacks have higher surface areas than the carbon blacks normally prepared from the feedstocks, as a result of which the blacks are particularly suitable for use in imparting conductivity properties to plastic materials and the like. This disclosure also relates to the production of a novel class of furnace blacks having excellent conductivity properties and which are characterized by high surface areas and low pH values.
    Type: Grant
    Filed: April 30, 1981
    Date of Patent: February 15, 1983
    Assignee: Cabot Corporation
    Inventors: Barrie J. Yates, Ronald C. Hurst
  • Production of carbon black
    Patent number: 4370308
    Abstract: This disclosure relates to an improved furnace process for producing carbon blacks by the incomplete combustion of hydrocarbonaceous feedstock wherein the resultant blacks either have higher surface areas than the carbon blacks normally prepared from the feedstocks or are produced more economically. The blacks produced by the process are suitable for use in all of the typical applications such as rubber plastics, inks and the like.
    Type: Grant
    Filed: May 15, 1981
    Date of Patent: January 25, 1983
    Assignee: Cabot Corporation
    Inventors: Frank R. Williams, Ronald C. Hurst
  • Production of high surface area carbon blacks
    Patent number: 4283378
    Abstract: This disclosure relates to an improved furnace process for producing carbon blacks by the incomplete combustion of hydrocarbonaceous feedstock wherein the resultant blacks have higher surface areas than the carbon blacks normally prepared from the feedstocks, as a result of which the blacks are particularly suitable for use in imparting conductivity properites to plastic materials and the like. This disclosure also relates to the production of a novel class of furnace blacks having excellent conductivity properites and which are characterized by high surface areas and low pH values.
    Type: Grant
    Filed: August 1, 1979
    Date of Patent: August 11, 1981
    Assignee: Cabot Corporation
    Inventors: Barrie J. Yates, Ronald C. Hurst
  • Production of carbon blacks
    Patent number: 4105750
    Abstract: This disclosure relates to an improved furnace process for preparing carbon blacks, especially semi-reinforcing furnace blacks, by the incomplete combustion of hydrocarbonaceous feedstocks wherein the structure characteristics of the resultant blacks are lowered without significantly increasing the particle size of the blacks.
    Type: Grant
    Filed: November 22, 1976
    Date of Patent: August 8, 1978
    Assignee: Cabot Corporation
    Inventors: John H. Horn, William R. Morehead, Ronald C. Hurst, Dennis J. Potter, Clyde D. Schaub
  • Production of high structure carbon blacks
    Patent number: 3952087
    Abstract: This disclosure relates to an improved furnace process for preparing carbon blacks by the incomplete combustion of hydrocarbonaceous feedstocks wherein the resultant blacks have higher structure characteristics than the carbon blacks normally prepared from the feedstocks.
    Type: Grant
    Filed: September 13, 1974
    Date of Patent: April 20, 1976
    Assignee: Cabot Corporation
    Inventors: Randolph Antonsen, Allan Clark Morgan, Roger T. Ball, Ronald C. Hurst, Dennis J. Potter, Robert I. Wood