Patents by Inventor Hee J. Yoo

Hee J. Yoo 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).

  • Fibers produced from crystalline propylene polymers having high melt flow rate values and a narrow molecular weight distribution
    Patent number: 5529850
    Abstract: Crystalline propylene polymers having P.I. values lower than or equal to 3.7, and having, at an MFR (Melt Flow Rate) ranging from 600 to 1000 g/10 min., an Mw value from 100,000 to 60,000, and at a MFR ranging from 1000 to 2000 g/10 min., an Mz value higher than or equal to 140,000, are obtained by way of polymerization with specific supported catalysts.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: June 25, 1996
    Assignee: Montell North America Inc.
    Inventors: Giampiero Morini, Gianni Pennini, Enrico Albizzati, Hee J. Yoo
  • Crystalline propylene polymers having high melt flow rate values and a narrow molecular weight distribution
    Patent number: 5476911
    Abstract: Crystalline propylene polymers having P.I. values lower than or equal to 3.7, and having, at an MFR (Melt Flow Rate) ranging from 600 to 1000 g/10 min., an Mw value from 100,000 to 60,000, and at a MFR ranging from 1000 to 2000 g/10 min., an Mz value higher than or equal to 140,000, are obtained by way of polymerization with specific supported catalysts.
    Type: Grant
    Filed: July 5, 1994
    Date of Patent: December 19, 1995
    Assignee: Montell North America Inc.
    Inventors: Giampiero Morini, Gianni Pennini, Enrico Albizzati, Hee J. Yoo