Patents by Inventor Young H. Kim

Young H. Kim 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).

  • Processing additives for tetrafluoroethylene polymers
    Patent number: 5081188
    Abstract: A composition comprising tetrafluoroethylene polymers and selected poly(2,2-dialkylpropiolactones) that is useful as a molding compound is disclosed. Also provided is a process for the production and use of such a mixture and the pyrolysis of the mixture to give polytetrafluoroethylene parts.
    Type: Grant
    Filed: March 23, 1990
    Date of Patent: January 14, 1992
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Young H. Kim
  • Hyperbranched polyarylene
    Patent number: 5070183
    Abstract: Highly branched, functionalized, wholly aromatic poly(arylenes) are prepared by the polymerization of AB.sub.n -type aromatic monomers.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: December 3, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Young H. Kim
  • Living cationic polymerization of vinylic unsaturated compounds
    Patent number: 5026799
    Abstract: This invention relates to a process for the living cationic polymerization of vinylic unsaturated monomers in the presence of halogenated aliphatic acids and the zinc salts of halogenated aliphatic acids.
    Type: Grant
    Filed: May 30, 1990
    Date of Patent: June 25, 1991
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Thomas L. Heitz, Young H. Kim
  • Hyperbranched polyarylene
    Patent number: 4857630
    Abstract: Highly-branched, functionalized, wholly aromatic poly(arylenes) are prepared by the polymerization of AB.sub.n -type aromatic monomers.
    Type: Grant
    Filed: December 7, 1987
    Date of Patent: August 15, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Young H. Kim
  • Method for making polyamide anion solutions
    Patent number: 4824881
    Abstract: Deprotonation of polyamides employing alkoxide and/or alkali amide bases in solution in a liquid sulfoxide, the solutions being useful to make N-alkylated and N-acylated derivatives and to fabricate polyamide films, fibers, coatings, manufactured articles, and the like.
    Type: Grant
    Filed: January 14, 1988
    Date of Patent: April 25, 1989
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Young H. Kim
  • Tape guide construction of a head drum of a videocassette recorder
    Patent number: 4709289
    Abstract: A tape guide construction of a head drum of a video-cassette recorder comprising a circular wire fixedly engaged in a V-shaped groove formed at an outer peripheral surface of a lower drum of the head drum. A portion of the peripheral surface of the circular wire is disposed outside the V-shaped groove, whereby a tape is contacted at the lower edge thereof with and guided by the upper-protruded portion of the peripheral surface of the wire, during the travel thereof.
    Type: Grant
    Filed: July 9, 1986
    Date of Patent: November 24, 1987
    Assignee: Gold Star Co., Ltd.
    Inventor: Young H. Kim
  • Buckled belt for the emergency escape
    Patent number: 4569417
    Abstract: A steel wire is extended from one end of a belt to a ring of a buckle through a small escape device inserted a pair of control plates, pulling speed of said wire being controlled by a rack gear with roller and a pair of control plates constituted with a fixed control plate and a moving control plate, wherein said moving control plate is controlled by control bolts positioned on the side surface of a small escape device, and said small escape device is disassembled from said buckle in an emergency.
    Type: Grant
    Filed: October 31, 1984
    Date of Patent: February 11, 1986
    Inventors: Woo K. Lee, Young H. Kim