Patents by Inventor Myong-Gi A. Park

Myong-Gi A. Park 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).

  • Process for vinyl aromatic monomer polymerization inhibition
    Patent number: 4474646
    Abstract: This invention is directed to the use of mixtures of a polymerization inhibitor in the distillation of readily polymerizable vinyl aromatic monomers and more specifically to the use of mixtures containing 2,6-dinitro-4-halophenols as polymerization inhibitors for vinyl aromatic monomers such as styrene and vinyl benzenes. The invention comprises the process of subjecting the vinyl aromatic monomers to distillation temperatures in the presence of mixtures containing 2,6-dinitro-4-halophenols to inhibit polymerization.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: October 2, 1984
    Assignee: The Sherwin-Williams Company
    Inventors: John C. Grivas, Myong-Gi A. Park
  • Process for vinyl aromatic monomer polymerization inhibition
    Patent number: 4457806
    Abstract: This invention is directed to the use of a polymerization inhibitor in the distillation of readily polymerizable vinyl aromatic monomers and more specifically to the use of mixtures of 2,6-dinitro-4-ethyl-phenol as a polymerization inhibitor for vinyl aromatic monomers such as styrene and vinyl benzenes. The invention comprises the process of subjecting the vinyl aromatic monomers to distillation temperatures in the presence of mixtures of 2,6-dinitro-4-ethyl-phenol and 2,6-dinitro-paracresol to prevent polymerization.
    Type: Grant
    Filed: June 28, 1982
    Date of Patent: July 3, 1984
    Assignee: The Sherwin-Williams Company
    Inventors: John C. Grivas, Myong-Gi A. Park