Patents by Inventor Neil E. S. Thompson

Neil E. S. Thompson 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).

  • Dithiocarbamate compounds
    Patent number: 5130473
    Abstract: Reduction of asphaltene precipitation in asphaltenic subterranean reservoirs treated with aqueous solutions of strong acid is achieved by utilizing novel dithiocarbamate compositions to sequester iron.
    Type: Grant
    Filed: January 7, 1991
    Date of Patent: July 14, 1992
    Assignee: Petrolite Corporation
    Inventors: Irwin C. Jacobs, Neil E. S. Thompson
  • Certain dithiocarbamates and method of use for reducing asphaltene precipitation in asphaltenic reservoirs
    Patent number: 5112505
    Abstract: Reduction of asphaltene precipitation in asphaltenic subterranean reservoirs treated with aqueous solutions of strong acid is achieved by utilizing novel dithiocarbamate compositions to sequester iron.
    Type: Grant
    Filed: September 13, 1990
    Date of Patent: May 12, 1992
    Assignee: Petrolite Corporation
    Inventors: Irwin C. Jacobs, Neil E. S. Thompson
  • Methods for treating hydrocarbon recovery operations and industrial waters
    Patent number: 5089619
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: February 18, 1992
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Methods for treating hydrocarbon recovery operations and industrial waters
    Patent number: 5089227
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: February 18, 1992
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Methods for treating hydrocarbon recovery operations and industrial waters
    Patent number: 5026483
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: November 21, 1990
    Date of Patent: June 25, 1991
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Methods for treating hydrocarbon recovery operations and industrial waters
    Patent number: 5019274
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: May 28, 1991
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Methods for treating hydrocarbon recovery operations and industrial waters
    Patent number: 5013451
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: May 7, 1991
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Compounds containing sulfur and amino groups
    Patent number: 4981609
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: November 25, 1988
    Date of Patent: January 1, 1991
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Methods for treating hydrocarbon recovery operations and industrial waters
    Patent number: 4956099
    Abstract: Certain dithiocarbamates are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 30, 1989
    Date of Patent: September 11, 1990
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Dithiocarbamates for treating hydrocarbon recovery operations and industrial waters
    Patent number: 4864075
    Abstract: Nitrogen-containing dithiocarbamic acids are used as reverse demulsifiers, corrosion and scale inhibitors, flocculants, biocides, flotation aids, water clarifiers, interface control agents and antifoaming agents.
    Type: Grant
    Filed: June 20, 1988
    Date of Patent: September 5, 1989
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Compounds containing sulfur and amino groups
    Patent number: 4843176
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: October 25, 1985
    Date of Patent: June 27, 1989
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Methods for treating hydrocarbon recovery operations and industrial waters
    Patent number: 4826625
    Abstract: Use of nitrogen-containing tridithiocarbamic acid compositions as reverse demulsifiers.
    Type: Grant
    Filed: August 21, 1987
    Date of Patent: May 2, 1989
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • .alpha.-aminoalkylsulfur compositions
    Patent number: 4751051
    Abstract: The uses of .alpha.-aminoalkyl sulfur compositions and to the preparation thereof, particularly as corrosion inhibitors. These compositions contain a moiety of the general formula ##STR1## in a linear or cyclic configuration.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: June 14, 1988
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. O. Alink
  • Use of tridithiocarbamic acid compositions as demulsifiers
    Patent number: 4689177
    Abstract: Use of nitrogen-containing tridithiocarbamic acid compositions as reverse demulsifiers.
    Type: Grant
    Filed: October 15, 1986
    Date of Patent: August 25, 1987
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Robert G. Asperger
  • Process of corrosion inhibition using compounds containing sulfur and amino groups
    Patent number: 4684507
    Abstract: A process for inhibiting the corrosion of ferrous metals in aqueous acidic or briny media comprising the step of adding a composition of the formula ##STR1## where R.sub.1 is a hydrocarbon group, O is a pyridine or substituted pyridine, and X is an anion.
    Type: Grant
    Filed: October 29, 1982
    Date of Patent: August 4, 1987
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • .alpha.-aminoalkylsulfur compositions
    Patent number: 4633019
    Abstract: This invention relates to .alpha.-aminoalkylsulfur compositions and to the preparation and uses thereof, particularly as corrosion inhibitors. These compositions contain a moiety of the general formula ##STR1## in a linear or cyclic configuration.
    Type: Grant
    Filed: May 18, 1984
    Date of Patent: December 30, 1986
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. O. Alink
  • Imidazoline compounds containing sulfur and amino groups
    Patent number: 4622404
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: November 10, 1981
    Date of Patent: November 11, 1986
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Thioethers of imidazolines
    Patent number: 4616085
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. a nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: November 24, 1982
    Date of Patent: October 7, 1986
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Pyrimidines containing sulfur and amino groups as corrosion inhibitors
    Patent number: 4539404
    Abstract: This invention relates to the following:(1) An amino-containing composition characterized by polymercapto groups,(2) A polyamino-containing composition characterized by mercapto or polymercapto groups,(3) A composition characterized by the presence ofA. a mercapto or polymercapto groups, andB. nitrogen-containing group characterized by at least one of the following:1. an amido or a polyamido group,2. a cyclic amidine or a polycyclic amidine group,3. an epihalohydrin-derived amino-containing group.This invention also relates to the use of the above compositions as corrosion inhibitors.
    Type: Grant
    Filed: November 24, 1982
    Date of Patent: September 3, 1985
    Assignee: Petrolite Corporation
    Inventors: Neil E. S. Thompson, Derek Redmore, Bernardus A. Oude Alink, Benjamin T. Outlaw
  • Mercapto-polycarboxylic acids
    Patent number: 4495336
    Abstract: This invention relates to a sulfidic process of inhibiting corrosion which comprises heating a system with a sulfur-containing polycarboxylic acid or derivatives thereof having carboxylic groups attached to adjacent carbons.
    Type: Grant
    Filed: June 7, 1982
    Date of Patent: January 22, 1985
    Assignee: Petrolite Corporation
    Inventors: Rudolf H. Hausler, Neil E. S. Thompson