Patents by Inventor Dongcheel LEE

Dongcheel LEE 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).

  • Publication number: 20240110102
    Abstract: Disclosed are ethylenically unsaturated salts of allyl (poly)ether sulfates utilized as reactive surfactants or emulsifiers during emulsion polymerization.
    Type: Application
    Filed: December 13, 2023
    Publication date: April 4, 2024
    Applicant: RHODIA OPERATIONS
    Inventors: Lichang Zhou, Adnan Siddiqui, Dongcheel Lee, Derek Pakenham, Eugene J. Anderson, Shailesh Majmudar, Eunyong Kim, Homayoun Jamasbi, An Tran, Peng Zhang
  • Patent number: 11884867
    Abstract: Disclosed are ethylenically unsaturated salts of allyl (poly)ether sulfates utilized as reactive surfactants or emulsifiers during emulsion polymerization.
    Type: Grant
    Filed: May 1, 2020
    Date of Patent: January 30, 2024
    Assignee: RHODIA OPERATIONS
    Inventors: Lichang Zhou, Adnan Siddiqui, Dongcheel Lee, Derek Pakenham, Eugene J. Anderson, Shailesh Majmudar, Eunyong Kim, Homayoun Jamasbi, An Tran, Peng Zhang
  • Publication number: 20220235272
    Abstract: Disclosed are ethylenically unsaturated salts of allyl (poly)ether sulfates utilized as reactive surfactants or emulsifiers during emulsion polymerization.
    Type: Application
    Filed: May 1, 2020
    Publication date: July 28, 2022
    Inventors: Lichang ZHOU, Adnan SIDDIQUI, Dongcheel LEE, Derek PAKENHAM, Eugene J. ANDERSON, Shailesh MAJMUDAR, Eunyong KIM, Homayoun JAMASBI, An TRAN, Peng ZHANG
  • Publication number: 20220195077
    Abstract: Processes to prepare aqueous polymer dispersions are provided, as well as compositions thereof, which have high solids content (e.g., 50%) with low viscosity. The process uses a selective hydrophilic macro-RAFT agent of formula (I), and is substantially free of surfactants. This process can be used to make latex polymers with good stability, which can be used widely in coatings (e.g., architectural paints, stone paints, industrial coatings, wood coatings, etc.), adhesives, sealants and mastic compositions.
    Type: Application
    Filed: April 14, 2020
    Publication date: June 23, 2022
    Inventors: Lichang ZHOU, Dongcheel LEE, Tiffany CHEN, Fabio TREZZI, Shailesh MAJMUDAR, Homayoun JAMASBI, An TRAN, Pierre-Emmanuel DUFILS, Laurianne TIMBART, David James WILSON, Changheon KANG
  • 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: 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