Patents by Inventor David A. Vanzin

David A. Vanzin 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).

  • Patent number: 11046631
    Abstract: The invention relates to a novel solid form of diphenol compound. A process for the preparation of diphenol prills having a spherical shape is disclosed. Said process comprising providing a molten composition comprising from 50 to 100 wt. % of a diphenol compound or a mixture of at least two diphenol compounds, and less than 0.1 wt. % of water; forcing said molten composition through at least one droplet generator means to form droplets; and cooling said droplets to form solid diphenol prills. The diphenol prills obtainable by said process are also one subject-matter of the invention.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: June 29, 2021
    Assignee: RHODIA OPERATIONS
    Inventors: Cédric Humblot, David Vanzin, Lars Fischer, Rodolphe Sapey-Triomphe
  • Patent number: 10974417
    Abstract: Resin masterbatch compositions are provided as closed end pellets having a core including at least one additive and an outer layer comprising a polymer encapsulating the core, in which the thickness of the outer layer if from 0.001 mm to 1 cm. A stabilized composition is prepared from an organic material to be stabilized and the resin masterbatch composition. A process for producing the resin masterbatch composition includes co-extruding in tubular form a core material encapsulated by an outer layer, wherein the core material comprises at least one additive, and the outer layer comprises a polymer, to form a filled tube; passing the filled tube into a sealing device that cuts the filled tube into multiple discrete segments seals and simultaneously seals each end of each discrete segment, thereby forming closed end pellets; and cooling the closed end pellets.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: April 13, 2021
    Assignee: Cytec Industries Inc.
    Inventors: Dinand Tijhuis, Erwin Tijhuis, Joseph Kozakiewicz, Jerry Mon Hei Eng, Ram B. Gupta, David Vanzin, Shailesh Majmudar
  • Patent number: 10793766
    Abstract: Sulfosuccinate surfactant compounds blended in binary and ternary combinations to yield synergistic sulfosuccinate surfactant systems and use of the same in enhanced oil recovery and hydraulic fracturing applications.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: October 6, 2020
    Assignee: Cytec Industries Inc.
    Inventors: David Vanzin, Shailesh Majmudar, Nimal Jayasuriya, Azhar M. Awan
  • Patent number: 10655054
    Abstract: This invention relates to foam-forming surfactant compositions having at least two surfactants whereof at least one is a sulfosuccinamate, and at least one is a sulfosuccinate, and optionally including, a solvent. Methods of recovering oil or gas by generating a foam, feeding the foam into a subterranean oil- or gas-bearing geological formation, and collecting mineral oil or natural gas driven by the foam in a production well, wherein the foam is generated by intimate mixing of one or more foam-forming surfactant compositions described herein with a gas in a foam generator, or by introduction of at least one of water and gases, together or intermittently or in alternating sequence, slugs of a gas which may be in a supercritical or non-supercritical state, and of water, wherein the foam-forming surfactant composition(s) can be admixed to the water or to the gas if the gas is in a supercritical state or be introduced separately as solution into the geological formation, are also provided.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: May 19, 2020
    Assignee: Cytec Industries Inc.
    Inventors: Azhar M. Awan, David Vanzin, Dongcheel Lee, Eunyong Kim
  • Publication number: 20200031749
    Abstract: The invention relates to a novel solid form of diphenol compound. A process for the preparation of diphenol prills having a spherical shape is disclosed. Said process comprising providing a molten composition comprising from 50 to 100 wt. % of a diphenol compound or a mixture of at least two diphenol compounds, and less than 0.1 wt. % of water; forcing said molten composition through at least one droplet generator means to form droplets; and cooling said droplets to form solid diphenol prills. The diphenol prills obtainable by said process are also one subject-matter of the invention.
    Type: Application
    Filed: February 21, 2018
    Publication date: January 30, 2020
    Inventors: Cédric HUMBLOT, David VANZIN, Lars FISCHER, Rodolphe SAPEY-TRIOMPHE
  • Publication number: 20180222087
    Abstract: Resin masterbatch compositions are provided as closed end pellets having a core including at least one additive and an outer layer comprising a polymer encapsulating the core, in which the thickness of the outer layer if from 0.001 mm to 1 cm. A stabilized composition is prepared from an organic material to be stabilized and the resin masterbatch composition. A process for producing the resin masterbatch composition includes co-extruding in tubular form a core material encapsulated by an outer layer, wherein the core material comprises at least one additive, and the outer layer comprises a polymer, to form a filled tube; passing the filled tube into a sealing device that cuts the filled tube into multiple discrete segments seals and simultaneously seals each end of each discrete segment, thereby forming closed end pellets; and cooling the closed end pellets.
    Type: Application
    Filed: July 29, 2016
    Publication date: August 9, 2018
    Inventors: Dinand TIJHUIS, Erwin TIJHUIS, Joseph KOZAKIEWICZ, Jerry Mon Hei ENG, Ram B. GUPTA, David VANZIN, Shailesh MAJMUDAR
  • Publication number: 20180051201
    Abstract: Sulfosuccinate surfactant compounds blended in binary and ternary combinations to yield synergistic sulfosuccinate surfactant systems and use of the same in enhanced oil recovery and hydraulic fracturing applications.
    Type: Application
    Filed: February 17, 2017
    Publication date: February 22, 2018
    Applicant: Cytec Industries Inc.
    Inventors: David VANZIN, Shailesh MAJMUDAR, Nimal JAYASURIYA
  • Publication number: 20170051195
    Abstract: The invention relates to a surfactant mixture having at least two different sulfosuccinates, and an additional surfactant selected from the group consisting of alkoxylated aliphatic alcohols, and to a method of treating a hydrocarbon oil containing formation by injection of solutions including mixtures of these surfactants.
    Type: Application
    Filed: August 18, 2016
    Publication date: February 23, 2017
    Applicant: Cytec Industries Inc.
    Inventors: David VANZIN, Shailesh MAJMUDAR, Nimal JAYASURIYA
  • Publication number: 20160347990
    Abstract: This invention relates to foam-forming surfactant compositions having at least two surfactants whereof at least one is a sulfosuccinamate, and at least one is a sulfosuccinate, and optionally including, a solvent. Methods of recovering oil or gas by generating a foam, feeding the foam into a subterranean oil- or gas-bearing geological formation, and collecting mineral oil or natural gas driven by the foam in a production well, wherein the foam is generated by intimate mixing of one or more foam-forming surfactant compositions described herein with a gas in a foam generator, or by introduction of at least one of water and gases, together or intermittently or in alternating sequence, slugs of a gas which may be in a supercritical or non-supercritical state, and of water, wherein the foam-forming surfactant composition(s) can be admixed to the water or to the gas if the gas is in a supercritical state or be introduced separately as solution into the geological formation, are also provided.
    Type: Application
    Filed: May 30, 2016
    Publication date: December 1, 2016
    Inventors: David VANZIN, Dongcheel LEE, Eunyong KIM
  • Patent number: 6485750
    Abstract: Phenothiazine and its derivatives products are provided with a minimal level of fines or dust as a result of forming such products in prill form. The prills are generally spherical. Also provided is a method for reducing the level of powder in phenothiazine product which includes forming the phenothiazine product in prill form such that the prills have a generally spherical shape. The prill product achieves improved handling, flowability and dissolution times, while minimizing the generation of phenothiazine fines and dust, and the problems associated with worker exposure, irritation and sensitization to such fines and dust.
    Type: Grant
    Filed: August 7, 2001
    Date of Patent: November 26, 2002
    Assignee: Avecia, Inc.
    Inventor: David A. Vanzin
  • Publication number: 20020102310
    Abstract: Phenothiazine and its derivatives products are provided with a minimal level of fines or dust as a result of forming such products in prill form. The prills are generally spherical. Also provided is a method for reducing the level of powder in phenothiazine product which includes forming the phenothiazine product in prill form such that the prills have a generally spherical shape. The prill product achieves improved handling, flowability and dissolution times, while minimizing the generation of phenothiazine fines and dust, and the problems associated with worker exposure, irritation and sensitization to such fines and dust.
    Type: Application
    Filed: August 7, 2001
    Publication date: August 1, 2002
    Applicant: Avecia, Inc.
    Inventor: David A. Vanzin
  • Patent number: 6284279
    Abstract: Phenothiazine and its derivatives products are provided with a minimal level of fines or dust as a result of forming such products in prill form. The prills are generally spherical. Also provided is a method for reducing the level of powder in phenothiazine product which includes forming the phenothiazine product in prill form such that the prills have a generally spherical shape. The prill product achieves improved handling, flowability and dissolution times, while minimizing the generation of phenothiazine fines and dust, and the problems associated with worker exposure, irritation and sensitization to such fines and dust.
    Type: Grant
    Filed: December 3, 1999
    Date of Patent: September 4, 2001
    Assignee: Avecia, Inc.
    Inventor: David A. Vanzin