Patents Represented by Attorney D. A. Newell
  • Patent number: 4453570
    Abstract: An insulated concentric tubing well element having an inner tubing and an outer tubing with a substantially solid insulating material in the annulus between the inner and outer tubing. A bonding material fills the voids in the annulus and the surface of the solid insulating material. The bonding material prevents movement within the annulus and seals the annulus. Calcium silicate is disclosed as a suitable material for the solid insulation and sodium silicate is disclosed as the bonding material. A method is disclosed for producing the complete well element.
    Type: Grant
    Filed: June 29, 1981
    Date of Patent: June 12, 1984
    Assignee: Chevron Research Company
    Inventor: Stanley O. Hutchison
  • Patent number: 4454269
    Abstract: A method for producing air-blown industrial asphalt using asphalt, ethylene/vinyl-acetate copolymer and an air-blowing catalyst is disclosed. The EVA copolymer is present in a weight percent of from 1 weight percent to 10 weight percent. Also disclosed is the asphalt composition resulting from the air-blowing method.
    Type: Grant
    Filed: December 30, 1982
    Date of Patent: June 12, 1984
    Assignee: Chevron Research Company
    Inventor: Judson E. Goodrich
  • Patent number: 4450281
    Abstract: Disclosed is a process for the preparation of substituted carboxylic acids and their derivatives in which the synthesis reaction is carried out at least partially thermally in the presence of a furan-type compound. The furan-type compound substantially increases yields and reduces the formation of undesirable resinous by-products.
    Type: Grant
    Filed: December 29, 1982
    Date of Patent: May 22, 1984
    Assignee: Chevron Research Company
    Inventor: Robert H. Wollenberg
  • Patent number: 4446244
    Abstract: A catalyst composition including imogolite and its use in hydrogen processing hydrocarbons are disclosed.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: May 1, 1984
    Assignee: Chevron Research Company
    Inventor: Robert A. Van Nordstrand
  • Patent number: 4446118
    Abstract: A method of removing hydrogen sulfide contaminants from a gas stream. The gas stream is contacted with dimethyl sulfoxide promoted with the salt of an organic acid, reducing H.sub.2 S to sulfur.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: May 1, 1984
    Assignee: Chevron Research Company
    Inventor: Stephen W. Nicksic
  • Patent number: 4444007
    Abstract: A method for combined cycle electrical power generation is disclosed wherein electrical power is generated by an electrical generator driven by a gas turbine, which is in turn driven by two gaseous products of a coal gasification process. The first gaseous product is produced with hot char by the reduction of a coal/water slurry by stream in a gasifier. The second gaseous product is produced by oxidation of the hot char in a combustor.
    Type: Grant
    Filed: March 12, 1982
    Date of Patent: April 24, 1984
    Assignee: Chevron Research Company
    Inventors: David S. Mitchell, David R. Sageman
  • Patent number: 4444263
    Abstract: A permanent thermal packer is disclosed for sealing the annulus between an injection tubing string and a well casing. The packer is thermal cement and is placed from within the injection tubing string to seal a substantial portion of the annulus above the injection zone. The packer provides a means for sealing the annulus above the injection zone thus permitting insulating material to be placed in the annulus above the packer with the expectation that it will not be damaged by well bore fluids.
    Type: Grant
    Filed: April 22, 1983
    Date of Patent: April 24, 1984
    Assignee: Chevron Research Company
    Inventors: Johan F. Ploeg, Arlo L. Oden
  • Patent number: 4443326
    Abstract: A hydrocarbon conversion process is disclosed wherein a hydrocarbon feed is contacted with a dehydrocyclization catalyst containing a large-pore zeolite and a Group VIII metal, then the resulting reformate is upgraded using an intermediate pore size zeolite.
    Type: Grant
    Filed: February 10, 1983
    Date of Patent: April 17, 1984
    Assignee: Chevron Research Company
    Inventor: Leslie A. Field
  • Patent number: 4443558
    Abstract: The method of making a catalyst comprising alumina with GP VI and VIII components wherein the method comprises peptizing an alumina powder with an aqueous acid solution of a group VIII metal salt, neutralizing the peptized alumina/group VIII metal with an aqueous solution of a nitrogen-containing base with a dissolved group VI metal salt therein, extruding, drying, and calcining the catalytic particles.
    Type: Grant
    Filed: April 8, 1982
    Date of Patent: April 17, 1984
    Assignee: Chevron Research Company
    Inventor: Kirk R. Gibson
  • Patent number: 4443229
    Abstract: A coal gasification process is disclosed wherein two portions of heat transfer material are introduced into the reaction vessel at different locations and different temperatures. Steam is passed upwardly through the vessel to react with the carbonaceous material to form a hot char and a gaseous product, wherein the heat necessary for the coal gasification reaction is supplied by both the first portion of heat transfer material and the second portion of heat transfer material. Then the hot char and gaseous product are cooled by contact with the first portion of heat transfer material.
    Type: Grant
    Filed: January 31, 1983
    Date of Patent: April 17, 1984
    Assignee: Chevron Research Company
    Inventors: David Sageman, David S. Mitchell
  • Patent number: 4443372
    Abstract: 1-Alkyl derivatives of 3-aryloxy-4-(2-carbalkoxy)-phenyl-azet-2-ones of the formula: ##STR1## wherein R.sub.1 is methyl or ethyl; R.sub.2 is lower alkyl; and X.sub.1 and X.sub.2 are independently hydrogen or halogen, are effective as plant growth regulators.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: April 17, 1984
    Assignee: Chevron Research Company
    Inventors: Tatao Luo, Louis Russo, Francis J. Freenor, III
  • Patent number: 4443029
    Abstract: A coupling unit is provided for joining flanged pipe ends. The ends are held in a pair of semicircular clamp members having inclined recesses and wedge elements for separating the flanges apart and bringing them into contact with the clamp.
    Type: Grant
    Filed: February 8, 1982
    Date of Patent: April 17, 1984
    Assignee: Chevron Research Company
    Inventor: Darryl E. Laxo
  • Patent number: 4442074
    Abstract: A method of recovering metal values from an aqueous stream. The metal valves are preferably obtained from leaching spent hydroprocessing catalysts, and include cobalt, nickel, molybdenum and vanadium. The metal values are extracted, isolated, and purified by liquid extraction techniques.
    Type: Grant
    Filed: September 24, 1982
    Date of Patent: April 10, 1984
    Assignee: Chevron Research Company
    Inventors: Gale L. Hubred, Dean A. Van Leirsburg
  • Patent number: 4440780
    Abstract: 3-(N-acyl-N-arylamino) and 3-(N-thionoacyl-N-arylamino)-gamma-butyrolactones and thiobutyrolactones have fungicidal activity.
    Type: Grant
    Filed: June 1, 1979
    Date of Patent: April 3, 1984
    Assignee: Chevron Research Company
    Inventor: David C. K. Chan
  • Patent number: 4440579
    Abstract: A process for air blowing asphalt in the presence of organic sulfonic acids and an asphalt composition comprising a major amount of asphalt and a minor but effective amount of organic sulfonic acid.
    Type: Grant
    Filed: November 30, 1982
    Date of Patent: April 3, 1984
    Assignee: Chevron Research Company
    Inventor: Penny K. Eidem
  • Patent number: 4440623
    Abstract: Heat transfer particles of fluidizable size are selected for recycling to the pyrolysis zone to broaden usable size range of oil shale feed. These recycle particles should all be of a fluidizable size and when mixed with the raw oil shale the total amount of fluidizable particles should comprise not less than about 60 weight percent of the particles in the mixture. This process is especially useful when the heat transfer material is recycled oil shale particles. The present invention is particularly advantageous when the oil shale is pyrolyzed in a vertical retorting vessel containing a fluidized bed above a packed bed of particles.
    Type: Grant
    Filed: August 30, 1982
    Date of Patent: April 3, 1984
    Assignee: Chevron Research Company
    Inventor: P. Henrik Wallman
  • Patent number: 4440566
    Abstract: Substituted 2-[1-(oxyamino)alkylidene]-cyclohexane-1,3-diones have herbicidal activity against grassy weeds.
    Type: Grant
    Filed: August 9, 1982
    Date of Patent: April 3, 1984
    Assignee: Chevron Research Company
    Inventor: Tatao Luo
  • Patent number: 4438022
    Abstract: Additives for lubricating oils for internal combustion engines which contribute dispersancy and detergency to the lubricating oils are disclosed. The additives are hydrocarbylpoly(oxyalkylene) polyamine ethanes comprising a hydrocarbyl-terminated poly(oxyalkylene) chain of 2-5 carbon oxyalkylene units bonded to an ethane or substituted ethane chain in turn bonded to a nitrogen atom of a polyamine having from 2 to 12 amine nitrogens and from 2 to 40 carbon atoms with a carbon:nitrogen ratio between 1:1 and 10:1.
    Type: Grant
    Filed: July 30, 1982
    Date of Patent: March 20, 1984
    Assignee: Chevron Research Company
    Inventor: Curtis B. Campbell
  • Patent number: 4436640
    Abstract: Novel glycolate diesters of dithiophosphoric acid and salts of such esters suitable as additives in oil compositions are disclosed. Oil compositions containing the salts of such esters show improved extreme pressure/anti-wear and antioxidant properties.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: March 13, 1984
    Assignee: Chevron Research Company
    Inventor: Elaine S. Yamaguchi
  • Patent number: 4436649
    Abstract: Disclosed is a polyurea-thickened grease containing a polyhydroxylated compound which improves the low shear stability of the grease.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: March 13, 1984
    Assignee: Chevron Research Company
    Inventor: Jeffrey E. Stemke