Patents Represented by Attorney Robert A. Linn

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  • Exhaust systems
    Patent number: 4065918
    Abstract: The useful life of a catalyst being used in an engine exhaust system to lower the undesirable constituents in the exhaust gas of an engine being operated on gasoline containing a cyclopentadienyl manganese antiknock is greatly prolonged by providing an exhaust system having a plurality of baffles in the exhaust flow path upstream from the catalyst forming a tortuous flow path.
    Type: Grant
    Filed: February 12, 1973
    Date of Patent: January 3, 1978
    Assignee: Ethyl Corporation
    Inventor: Ellis B. Rifkin
  • Metal extraction from sea nodules
    Patent number: 4066733
    Abstract: A process is disclosed for extracting nickel, copper, cobalt and molybdenum from a complex ore containing copper, nickel, cobalt, molybdenum, manganese and iron. The process features treatment of the ore with gaseous compound followed by leaching with an aqueous ammonia/ammonium salt solution into which is additionally introduced sulfite.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: January 3, 1978
    Assignee: Ethyl Corporation
    Inventors: Michael Dubeck, Gordon G. Knapp
  • Antioxidant
    Patent number: 4066562
    Abstract: Methylenebis(dicyclopentyl phenols) in which at least one cyclopentyl group is ortho to the phenolic hydroxy group are effective antioxidants in a broad range of organic materials including mineral and synthetic lubricating oil and polyolefins.
    Type: Grant
    Filed: September 10, 1976
    Date of Patent: January 3, 1978
    Assignee: Ethyl Corporation
    Inventors: John C. Wollensak, Kryn G. Ihrman, Paul G. Elsey
  • Lubricant additive
    Patent number: 4065499
    Abstract: High molecular weight N-hydrocarbyl-substituted quaternary ammonium salts in which the hydrocarbyl group has a molecular weight of from about 350-3000 such as a polybutene ammonium chloride are effective detergents and dispersants for gasoline and lubricating oils.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: December 27, 1977
    Assignee: Ethyl Corporation
    Inventor: Robert E. Malec
  • Conversion of acetals
    Patent number: 4062898
    Abstract: Acetals can be transformed into useful products by reaction with carbon monoxide and hydrogen. For example, methylal can be converted to ethanol and .beta.-methoxyethanol. The reaction can be conducted in the presence of a catalyst system comprising cobalt, iodine and ruthenium.
    Type: Grant
    Filed: October 6, 1975
    Date of Patent: December 13, 1977
    Assignee: Ethyl Corporation
    Inventors: Michael Dubeck, Gordon G. Knapp
  • Lubricant composition
    Patent number: 4058468
    Abstract: A dispersant-antiwear lubricating oil additive is made by reacting a high molecular weight hydrocarbon-substituted phenol with aldehyde and ammonia or amines having a reactive hydrogen atom to form a Mannich condensation product which is reacted with an alkylene oxide and P.sub.2 S.sub.5 to form the additive.
    Type: Grant
    Filed: June 7, 1976
    Date of Patent: November 15, 1977
    Assignee: Ethyl Corporation
    Inventor: Robert E. Malec
  • Fire retardant polystyrene
    Patent number: 4057531
    Abstract: Polystyrene and related polymers are rendered flame retardant by 2,3,5,6-tetrabromo-p-xylene-.alpha.,.alpha.'-diol. Tests of polystyrene containing the diol show a high degree of stability toward ultraviolet radiation.
    Type: Grant
    Filed: January 31, 1977
    Date of Patent: November 8, 1977
    Assignee: Ethyl Corporation
    Inventors: Michael Dubeck, David R. Brackenridge
  • Polymonoolefin quaternary ammonium salts of triethylenediamine
    Patent number: 4056531
    Abstract: High molecular weight N-hydrocarbyl-substituted quaternary ammonium salts in which the hydrocarbyl group has a molecular weight of from about 350-3000 such as a polybutene ammonium chloride are effective detergents and dispersants for gasoline and lubricating oils.
    Type: Grant
    Filed: September 15, 1975
    Date of Patent: November 1, 1977
    Assignee: Ethyl Corporation
    Inventor: Robert E. Malec
  • Exhaust recirculation
    Patent number: 4055158
    Abstract: An improved internal combustion engine, exhaust gas recirculation (EGR) system is described which features the use of a liquid-cooled heat-exchange device to cool the recirculated exhaust before it is fed into the intake system of said engine. A preferred system uses a condensate trap situated downstream of said heat-exchange device. Use of this system effects further reduction in nitrogen oxides (NO.sub.x) content of the exhaust.
    Type: Grant
    Filed: March 19, 1976
    Date of Patent: October 25, 1977
    Assignee: Ethyl Corporation
    Inventor: Frederick J. Marsee
  • Fuel compositions and additive mixtures containing methanetricarboxylates for reducing exhaust gas catalyst plugging
    Patent number: 4052171
    Abstract: Gasoline compositions and additive mixtures of esters of 1,1,2-ethane tricarboxylic acid, in amount sufficient to alleviate the plugging of certain catalysts being used in an engine exhaust system to lower the amount of undesirable constituents in exhaust gas from an engine being operated on gasoline containing a cyclopentadienyl manganese antiknock.
    Type: Grant
    Filed: December 22, 1975
    Date of Patent: October 4, 1977
    Assignee: Ethyl Corporation
    Inventor: Leonard M. Niebylski
  • Process for producing urethane from nitro compounds, hydroxyl compounds and carbon monoxide using rhodium oxide catalysts
    Patent number: 4052437
    Abstract: In the process for preparing a urethane, particularly an aromatic urethane, by the reaction of an organic nitro compound, particularly an aromatic nitro compound, carbon monoxide, and an organic hydroxy compound in the presence of a catalyst, the improvement which comprises employing as said catalyst rhodium oxide, particularly substantially amorphous rhodium oxide, and optionally conducting the reaction in a nitrilic solvent.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: October 4, 1977
    Assignee: Ethyl Corporation
    Inventor: George C. Licke
  • Process for producing diurethane from dinitro compounds, hydroxyl compounds and carbon monoxide
    Patent number: 4052420
    Abstract: In the process for preparing a diurethane, particularly an aromatic diurethane, by the reaction of an organic dinitro compound, particularly an aromatic dinitro compound, carbon monoxide, and an organic hydroxyl compound in the presence of a catalyst, the improvement which comprises employing as said catalyst rhodium oxide, particularly substantially amorphous rhodium oxide, and carrying out the reaction in two stages, the first stage being carried out at a first temperature and pressure and the second stage being carried out at a higher temperature and pressure, and optionally conducting the reaction in a nitrilic solvent.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: October 4, 1977
    Assignee: Ethyl Corporation
    Inventor: George C. Licke
  • Lubricating oil containing alkanoic amide or ester-bridged hydrocarbyl substituted phenols
    Patent number: 4051049
    Abstract: Bis-substituted phenols bridged through a carbon atom of an aliphatic carboxylic amide or ester are effective ashless dispersants for lubricating oil. Preferably, the phenols are substituted with a high molecular weight poly-alpha-olefin group.
    Type: Grant
    Filed: March 15, 1976
    Date of Patent: September 27, 1977
    Assignee: Edwin Cooper and Company Limited
    Inventors: John Scotchford Elliott, Bryan Terence Davis, Richard Martin Howlett
  • Process for making a high molecular weight alkylphenoxy substituted aliphatic carboxylic ester
    Patent number: 4046802
    Abstract: Alkylphenoxy alkanoic esters are made in high yield by reaction of a C.sub.50-200 alkylphenol with a halo-substituted alkanoic ester in the presence of a base. The reaction product contains little unreacted alkylphenol and is converted without separation to a reaction mixture containing mainly alkylphenoxy alkanoic amide by reaction with amines. The amide reaction mixture is an effective ashless dispersant for lubricating oil.
    Type: Grant
    Filed: April 26, 1976
    Date of Patent: September 6, 1977
    Assignee: Edwin Cooper and Company Limited
    Inventors: John Scotchford Elliott, Bryan Terence Davis, Richard Martin Howlett
  • Process for preparing dialkylphosphites
    Patent number: 4045519
    Abstract: Dialkylphosphites are made by adding PCl.sub.3 to a mixture of water and alkanol and distilling product from the resultant reaction mixture leaving a distillation residue. Alkanol is added to the residue and the mixture reacted at elevated temperature to yield additional dialkylphosphite.
    Type: Grant
    Filed: September 16, 1976
    Date of Patent: August 30, 1977
    Assignee: Ethyl Corporation
    Inventor: William E. Wright
  • Preparation of bromine
    Patent number: 4044113
    Abstract: Bromine is produced by reacting chlorine and ethylene dibromide in the presence of an iron halide catalyst, e.g. ferric chloride.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: August 23, 1977
    Assignee: Ethyl Corporation
    Inventor: Joseph P. Kleiman
  • Spark vacuum advance control
    Patent number: 4040401
    Abstract: An ignition spark advance system for use with spark ignited internal combustion engines having an exhaust gas recycle system which includes EGR vacuum modulator means connected to and modulating an exhaust gas recycle valve. A conventional first vacuum actuated spark advance unit responsive to manifold vacuum signal cooperates with a second vacuum actuated spark advance unit responsive to EGR vacuum signal to advance the ignition spark. The second vacuum actuated spark advance unit provides additional spark advance during periods of lower intake manifold vacuum caused by exhaust gas recycle when the spark advance due to the first unit decreases.
    Type: Grant
    Filed: November 5, 1974
    Date of Patent: August 9, 1977
    Assignee: Ethyl Corporation
    Inventor: Frederick J. Marsee
  • Halogen-containing diphosphonates
    Patent number: 4036809
    Abstract: Compounds such as tetramethyl [(2,3,5-tetrabromo-p-phenylene)-dimethylene] diphosphonate are useful as flame retardants in polymers and resins such as unsaturated polyesters and polyester fibers, polystyrene, and the like.
    Type: Grant
    Filed: October 2, 1975
    Date of Patent: July 19, 1977
    Assignee: Ethyl Corporation
    Inventor: Kestutis A. Keblys
  • Corrosion inhibitors
    Patent number: 4028117
    Abstract: A corrosion inhibitor, particularly suitable for use in pipelines used for the transportation of hydrocarbon fluids such as crude petroleum or refined petroleum fractions, comprises a mixture of (a) from 1.8 to 25 parts by weight dimerised unsaturated fatty acid and (b) 1 part by weight of an alkoxylated alkyl phenol and provides a WSIM number (as defined) of at least 60.
    Type: Grant
    Filed: May 29, 1975
    Date of Patent: June 7, 1977
    Assignee: Edwin Cooper & Company Limited
    Inventor: Nicholas Warrington Moat
  • Fuel compositions and additive mixtures for alleviation of exhaust gas catalyst plugging
    Patent number: RE29488
    Abstract: Gasoline compositions and additive mixtures of carboxymethoxysuccinic acid, its salts, esters, or other derivatives in amount sufficient to alleviate the plugging of certain catalysts being used in an engine exhaust system to lower the amount of undesirable constituents in exhaust gas from an engine being operated on gasoline containing a cyclopentadienyl manganese antiknock.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: December 6, 1977
    Assignee: Ethyl Corporation
    Inventor: Marcelian F. Gautreaux