Patents Assigned to Chevron Research Company
  • Synergistic antioxidant lubricating oil additive composition
    Patent number: 4200543
    Abstract: Disclosed is a lubricating oil additive composition which imparts improved oxidation properties to internal combustion engine crankcase lubricants which comprises:(1) an antioxidant selected from aromatic or alkyl sulfides and polysulfides, sulfurized olefins, sulfurized carboxylic acid esters and sulfurized ester-olefins, and(2) an oil-soluble chlorinated hydrocarbon containing at least 6 carbon atoms.Lubricating oil compositions containing this additive composition are also disclosed. Particularly preferred are compositions which also contain an oil-soluble zinc salt.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: April 29, 1980
    Assignee: Chevron Research Company
    Inventors: Thomas V. Liston, Warren Lowe
  • Heat exchanger anti-foulant
    Patent number: 4200518
    Abstract: Disclosed is a process for reducing the fouling in a heat exchanger in which a hydrocarbon stream is heated or cooled as it passes through the heat exchanger. From 1 to 500 parts per million of a polyalkylene amine is added to the stream to reduce fouling.
    Type: Grant
    Filed: March 22, 1979
    Date of Patent: April 29, 1980
    Assignee: Chevron Research Company
    Inventor: Paul K. Mulvany
  • N-Alkyl or alkoxy-N'-substituted hydrocarbyl urea
    Patent number: 4200450
    Abstract: Compounds of the formula ##STR1## wherein R is aliphatic hydrocarbyl, alicyclic hydrocarbyl or aryl suitably substituted, if desired, or a heterocyclic group, R.sup.1 is hydrogen or alkyl, R.sup.2 is alkyl or alkoxy, R.sup.3 is ##STR2## wherein a is 0 or 1, R.sup.4 is hydrogen or CW'.sub.3, the W' being hydrogen or halogen, Z is halogen and X is halogen, hydroxy, alkoxy, acetoxy, carbethoxyalkoxy, phenoxy, alkylthio, carbethoxyalkylthio, phenylthio, phosphono, dithiophosphonoxy, phosphoramido, isocyanato, isothiocyanato, alkyl- and dialkylthiocarbamoylthio, alkyl- and dialkylcarbamoyloxy, alkylsulfonyl, etc., have herbicidal activity.
    Type: Grant
    Filed: June 26, 1978
    Date of Patent: April 29, 1980
    Assignee: Chevron Research Company
    Inventor: Malcolm S. Singer
  • NO.sub.x Control in cracking catalyst regeneration
    Patent number: 4199435
    Abstract: The amount of NO.sub.x formed during regeneration of a cracking catalyst in the presence of a metallic carbon monoxide combustion catalyst is decreased without substantially adversely affecting the carbon monoxide combustion activity of the promoter by subjecting the combustion-promoting catalyst to steam treatment prior to employing it in the cracking catalyst regeneration operation.
    Type: Grant
    Filed: December 4, 1978
    Date of Patent: April 22, 1980
    Assignee: Chevron Research Company
    Inventors: Donald O. Chessmore, Charles E. Rudy, Jr.
  • Refrigeration oil containing wear-inhibiting amounts of an aryl phosphate-fatty acid combination
    Patent number: 4199461
    Abstract: Refrigeration or heat pump apparatus containing working fluid consisting essentially of refrigerant and lubricant, said refrigerant being a halo-substituted hydrocarbon of 1 to 3 carbon atoms and preferably at least 40% by weight fluorine, and said lubricant being mineral lubricating oil, poly-alpha-olefin lubricating oil, synthetic alkylbenzene lubricating oil or mixtures thereof containing the combination of higher fatty acid and arylphosphate in a minor amount, sufficient to improve the wear-inhibiting properties of said lubricant and to improve the resistance of said lubricant to decomposition.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: April 22, 1980
    Assignee: Chevron Research Company
    Inventor: Sven A. Olund
  • Hydrogenation catalyst
    Patent number: 4199479
    Abstract: A catalyst composition having an intrinsic surface area above about 60 square meters per gram as measured by the BET nitrogen adsorption method, said catalyst comprising from about 1 to 30 weight percent of a finely divided silica component, and from about 1 to 99 weight percent of a hydrogenating component comprising copper in either elemental or compound form and zinc oxide.
    Type: Grant
    Filed: February 24, 1978
    Date of Patent: April 22, 1980
    Assignee: Chevron Research Company
    Inventor: John B. Wilkes
  • Staged turbulent bed retorting process
    Patent number: 4199432
    Abstract: A continuous process is disclosed for the retorting of shale and other similar hydrocarbon-containing solids of a broad particle size distribution in which the solids to be retorted are introduced into an upper portion of an elongated vessel with a solid heat transfer material at an elevated temperature. The hydrocarbon-containing solids and heat transfer material, a portion of each being fluidized, pass downwardly through the retort under substantially plug-flow conditions, countercurrent to an upwardly flowing stripping gas. Retorted solids and heat transfer material are withdrawn from the bottom of the retort vessel and a product stream of hydrocarbon vapors mixed with stripping gas is recovered overhead.
    Type: Grant
    Filed: March 22, 1978
    Date of Patent: April 22, 1980
    Assignee: Chevron Research Company
    Inventors: Paul W. Tamm, Gordon E. Langlois
  • Deposit control and dispersant additives
    Patent number: 4198306
    Abstract: Hydrocarbylpoly(oxyalkylene) aminoesters which are monoesters of a hydrocarbyl-terminated poly(oxyalkylene) alcohol and a monocarboxylic C.sub.2 -C.sub.20 (amino-substituted) alkanoic acid find use as fuel and lubricating oil additives.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: April 15, 1980
    Assignee: Chevron Research Company
    Inventor: Robert A. Lewis
  • Jet device for use in wells
    Patent number: 4197910
    Abstract: Apparatus for jet-cleaning wells having different-diameter casing strings, which apparatus includes an elongated member for running into the well, and a movable member having a jet body for forming a jet connected to the elongated member, which movable member moves out against the casing string responsive to application of jetting liquid between the movable member and the elongated member.
    Type: Grant
    Filed: March 31, 1978
    Date of Patent: April 15, 1980
    Assignee: Chevron Research Company
    Inventor: Stanley O. Hutchison
  • Process for producing concrete structures of high strength
    Patent number: 4198245
    Abstract: The strength of portland cement concrete structures which incorporate alkali metal or alkaline earth polysulfides is increased by heating the structures at temperatures above 110.degree. C.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: April 15, 1980
    Assignee: Chevron Research Company
    Inventors: Richard L. Ferm, Robert W. Campbell
  • Photodegradability of plastic polyolefins
    Patent number: 4197375
    Abstract: Plastic polyolefins which are resistant to photodegradation are combined with polyisobutylene to improve photodegradability.
    Type: Grant
    Filed: December 13, 1978
    Date of Patent: April 8, 1980
    Assignee: Chevron Research Company
    Inventor: Richard C. Fox
  • Method and apparatus for field measurement of interfacial tension between immiscible fluids
    Patent number: 4196615
    Abstract: A tensiometer apparatus for use in the field, for instance at the site of an oil well, for measuring the interfacial tension between two immiscible fluids, for instance oil and water, wherein a droplet of one fluid is caused to move under the force of gravity through the second fluid and a characteristic of the droplet is determined by measuring the change the droplet causes in capacitance of one or more capacitors as the droplet moves through the second fluid. The determined characteristic is then converted by calibration means to interfacial tension between the fluids.
    Type: Grant
    Filed: June 29, 1978
    Date of Patent: April 8, 1980
    Assignee: Chevron Research Company
    Inventor: Bruce W. Davis
  • Poly(oxyalkylene)aminocarbomates of alkylene polyamine
    Patent number: 4197409
    Abstract: Fuel compositions for internal combustion engines are provided containing deposit control additives which maintain cleanliness of intake systems without contributing to combustion chamber deposits. The additives are hydrocarbylpoly(oxyalkylene)aminocarbamates comprising a hydrocarbyl-terminated poly(oxyalkylene) moiety composed of 2-5 carbon oxyalkylene units and one or more 9-30 carbon oxyalkylene groups. Certain additives also find use as dispersants in lubricating oils.
    Type: Grant
    Filed: August 8, 1978
    Date of Patent: April 8, 1980
    Assignee: Chevron Research Company
    Inventor: Jennifer E. Lilburn
  • Hydrocarbylpoly(oxyalkylene) aminophosphorylamido esters and lubricating oil compositions containing the esters
    Patent number: 4196090
    Abstract: Hydrocarbylpoly(oxyalkylene) aminophosphorylamido esters are monoesters and diesters of polyether alcohols and phosphoramidic acids. The esters find use as lubricating oil additives which impart lubricity to the oil.
    Type: Grant
    Filed: September 5, 1978
    Date of Patent: April 1, 1980
    Assignee: Chevron Research Company
    Inventor: Jennifer E. Lilburn
  • Process for removing a bisulfite salt from an aqueous solution by chemisorption
    Patent number: 4196175
    Abstract: A process is provided for removing a bisulfite salt from an aqueous solution by chemisorbing the salt onto a macroreticular organic compound containing carbonyl functional groups and regenerating the compound.
    Type: Grant
    Filed: November 13, 1978
    Date of Patent: April 1, 1980
    Assignee: Chevron Research Company
    Inventor: Harbo P. Jensen
  • Algicidal and fungicidal 1-halo-2-substituted-thioethyl sulfones, 2-substituted-thiovinyl sulfones, and 1,2-dihalothioethyl sulfones
    Patent number: 4196152
    Abstract: 1-Halo-2-alkylthioethyl and 1-halo-2-arylthioethyl sulfones, having algicidal and fungicidal activity, are prepared by the addition of arylsulfenyl or alkylsulfenyl halides to alkyl or aryl vinyl sulfones. The thioethyl sulfone products are treated with a base to produce 2-alkylthiovinyl or 2-arylthiovinyl sulfones, which also have algicidal and fungicidal activity. The vinyl sulfones are halogenated to produce 1,2-dihalothioethyl sulfones, which have superior fungicidal activity, especially for tomato and celery late blight.
    Type: Grant
    Filed: June 5, 1978
    Date of Patent: April 1, 1980
    Assignee: Chevron Research Company
    Inventor: Philip S. Magee
  • Quick-setting bituminous emulsion compositions
    Patent number: 4193816
    Abstract: Quick setting, anionic bitumen emulsion compositions, suitable for road paving, recreational surfaces, etc., are formulated by emulsifying the bitumen in water with an ammonium or alkali metal salt of a hydrocarbon-substituted sulfuric, sulfonic, phosphoric or phosphonic acid emulsifier, mixing the emulsion with a fine aggregate and, prior to spreading the aggregate emulsion mixture, introducing an alkaline earth metal set initiator. The resulting composition rapidly breaks to a hard cohesive structure, so as to permit early use by traffic.
    Type: Grant
    Filed: May 22, 1972
    Date of Patent: March 18, 1980
    Assignee: Chevron Research Company
    Inventors: Richard L. Ferm, Chester C. Latif
  • Split stack blowout prevention system
    Patent number: 4193455
    Abstract: A blowout prevention system for an offshore structure positioned on the underwater bottom in a body of water which contains moving ice masses that could force the structure off location wherein a surface blowout preventer stack for conventional well control is connected to the upper end of a riser with the lower end of the riser being disconnectably connected to a subsurface blowout preventer stack which provides the necessary well control should the structure be forced off location. The subsurface stack is positioned on a wellhead located in a chamber in the subsea bottom and is disconnectably connected to the riser so that the riser may be quickly removed from the subsea bottom should the structure be forced off location.
    Type: Grant
    Filed: April 14, 1978
    Date of Patent: March 18, 1980
    Assignee: Chevron Research Company
    Inventors: Riddle E. Steddum, Donald R. Ray, Bruce L. Crager
  • Concrete composition
    Patent number: 4193810
    Abstract: Concrete articles of improved strength are prepared by impregnating the articles with aqueous solutions of alkali metal or alkaline earth metal polysulfides.
    Type: Grant
    Filed: August 31, 1978
    Date of Patent: March 18, 1980
    Assignee: Chevron Research Company
    Inventor: Richard L. Ferm
  • Acetic acid from methyl formate
    Patent number: 4194056
    Abstract: Acetic acid is obtained by heating methyl formate in the presence of soluble rhodium salt catalyst and halogen promoter and sufficient carbon monoxide to convert said rhodium salt into at least a monocarbonyl compound.
    Type: Grant
    Filed: September 30, 1970
    Date of Patent: March 18, 1980
    Assignee: Chevron Research Company
    Inventor: Emilios P. Antoniades