Patents Represented by Attorney Carl G. Seutter

Find this attorney in the Justia Lawyer Directory

  • Membrane process for separation of organic liquids
    Patent number: 4960519
    Abstract: A mixture of alcohol, such as methanol, and organic oxygenate, such as dimethyl carbonate, is treated to recover product of decreased methanol content by pervaporation across a composite membrane of a polyvinyl alcohol and a polyacrylic acid on a polyacrylonitrile support layer.
    Type: Grant
    Filed: October 16, 1989
    Date of Patent: October 2, 1990
    Assignee: Texaco Inc.
    Inventors: Mordechai Pasternak, Craig R. Bartels, John Reale, Jr., Vatsal M. Shah
  • Hydrocarbon compositions containing polyolefin graft polymers
    Patent number: 4952637
    Abstract: Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: August 28, 1990
    Assignee: Texaco Inc.
    Inventors: Maria M. Kapuscinski, Larry D. Grina, Ronald E. Jones, Rodney Lu-Dai Sung
  • Separations of oxygenates
    Patent number: 4952318
    Abstract: A dilute solution of methyl ethyl ketone is concentrated by pervaporation through a fluorinated ion exchange membrane which has been exchanged with a quaternary ammonium cation.
    Type: Grant
    Filed: January 7, 1988
    Date of Patent: August 28, 1990
    Assignee: Texaco Inc.
    Inventors: Mordechai Pasternak, Tansukhlal G. Dorawala
  • Middle distillate containing storage stability additive
    Patent number: 4948386
    Abstract: Additives formed by reaction of polyacids such as 1,3,6-hexane tricarboxylic acid and polyisobutenyl succinimide of a polyamine are effective in improving the storage stability of middle distillate fuels.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: August 14, 1990
    Assignee: Texaco Inc.
    Inventors: Rodney L. Sung, Benjamin J. Kaufman, Karol J. Thomas
  • Dehydration of glycols
    Patent number: 4941976
    Abstract: Concentration of aqueous solutions of ethylene glycol may be effected by a composite membrane including a glutaraldehyde-crosslinked polyvinyl alcohol bonded to a porous layer of polysulfone on a polyester backing.
    Type: Grant
    Filed: August 23, 1988
    Date of Patent: July 17, 1990
    Assignee: Texaco Inc.
    Inventors: Craig R. Bartels, John Reale, Jr.
  • Concentration of water-ketone compositions
    Patent number: 4935144
    Abstract: Water is separated from methyl isobutyl ketone by pervaporation across a polyvinyl alcohol membrane.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: June 19, 1990
    Assignee: Texaco Inc.
    Inventors: Mordechai Pasternak, Craig R. Bartels, John Reale, Jr.
  • Treatment of compositions containing water and organic oxygenates
    Patent number: 4910344
    Abstract: Aqueous compositions containing organic oxygenates such as methyl isobutyl ketone are treated by pervaporation through a polyvinyl alcohol/polyacrylic acid membrane to yield retentate containing increased concentration of oxygenate.
    Type: Grant
    Filed: February 1, 1989
    Date of Patent: March 20, 1990
    Assignee: Texaco Inc.
    Inventors: Mordechai Pasternak, Craig R. Bartels, John Reale, Jr.
  • Polymers with amino-methyl-propene-2-yl groups contaiing electron-withdrawing groups
    Patent number: 4904741
    Abstract: Polymers, such as polyisobutylene or ethylene-propylene copolymers, are functionalized by reaction with an activated imine to yield novel polymers.
    Type: Grant
    Filed: February 9, 1987
    Date of Patent: February 27, 1990
    Assignee: Texaco Inc.
    Inventors: Phillip B. Valkovich, Kechia J. Chou
  • Lubricating oil containing viscosity index improver
    Patent number: 4904404
    Abstract: A lubricating oil contains, as a multifunctional additive, a polymer such as an ethylene - propylene copolymer, bearing graft moieties derived from allyl glycidyl ether, or glycidyl methacrylate as a graft monomer polymer being functionalized with (i) N-vinyl pyrrolidone and (ii) a Mannich base formed by the reaction p-nonyl phenol, N-(aminoethyl) piperazine, and formaldehyde.
    Type: Grant
    Filed: March 7, 1989
    Date of Patent: February 27, 1990
    Assignee: Texaco Inc.
    Inventors: Christopher S. Liu, Nicholas Benfaremo, Maria M. Kapuscinski, Larry D. Grina
  • Novel ligand catalyst systems formed by reaction of carbonyl compounds with organosilicon compounds
    Patent number: 4900705
    Abstract: A novel catalyst system useful in preparation of dimethyl carbonate is prepared by complexing a metal salt such as cupric chloride CuCl.sub.2 with a ligand formed by reacting a carbonyl-containing organic compound such as ethyl formate with an organosilicon compound containing alkoxy and amine fucntionality, such as 3-aminopropyltriethoxysilane.
    Type: Grant
    Filed: October 19, 1987
    Date of Patent: February 13, 1990
    Assignee: Texaco Inc.
    Inventors: Robert A. Sawicki, Harry Chafetz
  • Solvent dewaxing process
    Patent number: 4898674
    Abstract: Solvent dewaxing of charge lubricating oil stocks requiring different ratios of methyl ethyl ketone to toluene is effected by adjusting the ratio of components in the dewaxing solvent by a membrane.
    Type: Grant
    Filed: March 24, 1988
    Date of Patent: February 6, 1990
    Assignee: Texaco Inc.
    Inventors: Mordechai Pasternak, Tansukhlal G. Dorawala
  • Membrane process for separating gases from gas-liquid charge streams
    Patent number: 4897091
    Abstract: Gases such as carbon dioxide may be separated from rich liquor (such as methanol containing carbon dioxide) by passage of gas through a membrane which is the reaction product of (i) a polyamine and (ii) a polyisocyanate or a poly (carbonyl chloride).
    Type: Grant
    Filed: April 4, 1988
    Date of Patent: January 30, 1990
    Assignee: Texaco Inc.
    Inventors: Mordechai Pasternak, Richard F. Beaupre
  • Separation of gases
    Patent number: 4889541
    Abstract: A rich liquid containing carbon dioxide-in-methanol may be treated to separate carbon dioxide by use of a silicone or silicone-polycarbonate membrane.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: December 26, 1989
    Assignee: Texaco Inc.
    Inventor: Richard F. Beaupre
  • Hydrocarbon compositions containing polyolefin graft polymers
    Patent number: 4886611
    Abstract: Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: December 12, 1989
    Assignee: Texaco Inc.
    Inventors: Maria M. Kapuscinski, Larry D. Grina, Ronald E. Jones, Rodney L. Sung
  • Catalyst for preparation of dimethyl carbonate
    Patent number: 4879266
    Abstract: An organic carbonate such as dimethyl carbonate is prepared by reacting an alcohol such as methanol, oxygen, and carbon monoxide in the presence of a catalyst system containing Cu(OMe)Cl as catalyst and boron trifluoride, calcium chloride, benzyltriethylammonium chloride, etc. as promoters.
    Type: Grant
    Filed: July 14, 1988
    Date of Patent: November 7, 1989
    Assignee: Texaco Inc.
    Inventor: Ajit K. Bhattacharya
  • Hydrocarbon compositions containing polyolefin graft polymers
    Patent number: 4877415
    Abstract: Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: October 31, 1989
    Assignee: Texaco Inc.
    Inventors: Maria M. Kapuscinski, Larry D. Grina, Ronald E. Jones, Rodney L. Sung
  • Separation of organic liquids
    Patent number: 4877529
    Abstract: Mixtures containing methanol and dimethyl carbonate or methanol and methyl t-butyl ether may be treated by pervaporation to cover product containing decreased quantity of methanol.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: October 31, 1989
    Assignee: Texaco Inc.
    Inventors: Mordechai Pasternak, Craig R. Bartels, John Reale, Jr.
  • Lubricating oil containing a Mannich base
    Patent number: 4877834
    Abstract: A lubricating oil contains a carbon-carbon backbone polymer containing residual unsaturation and bearing graft moieties derived from graft monomers containing ethylenic unsaturation and an epoxide moiety, and bonded to at least one of said graft moieties through an opened epoxide moiety, a Mannich base, prepared by reaction of an amine, an aldehyde, and a hindered phenol containing an active hydrogen atom.
    Type: Grant
    Filed: May 6, 1988
    Date of Patent: October 31, 1989
    Assignee: Texaco Inc.
    Inventors: Christopher S. Liu, Donald J. Clarke, Larry D. Grina
  • Treatment of water
    Patent number: 4872991
    Abstract: Aqueous liquor containing immiscible hydrocarbon liquid, such as produced water from an offshore petroleum drilling platform, is treated by gravity separation, skimming, and nanofiltration.
    Type: Grant
    Filed: July 5, 1988
    Date of Patent: October 10, 1989
    Assignee: Texaco Inc.
    Inventors: Craig R. Bartels, Tansukhlal G. Dorawala, Michael T. Stephenson, Mordechai Pasternak, John Reale, Jr.
  • Method of treating dilute aqueous solutions
    Patent number: 4865745
    Abstract: A dilute aqueous solution of isopropanol is concentrated by reverse osmosis across a membrane of polyethyleneimine which has been cross-linked with 2,4-toluene diisocyanate.
    Type: Grant
    Filed: May 2, 1988
    Date of Patent: September 12, 1989
    Assignee: Texaco Inc.
    Inventor: Mordechai Pasternak