Patents by Inventor Hung S. Park

Hung S. 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).

  • Patent number: 12245859
    Abstract: The present invention relates to a physiological monitoring device. Some embodiments of the invention allow for long-term monitoring of physiological signals. Further embodiments may also allow for the monitoring of secondary signals such as motion.
    Type: Grant
    Filed: July 29, 2024
    Date of Patent: March 11, 2025
    Assignee: iRhythm Technologies, Inc.
    Inventors: Timothy J. Bahney, Hung H. Ho, Shena H. Park, Genaro S. Sepulveda, Mark J. Day, Yuriko Tamura
  • Patent number: 12245860
    Abstract: The present invention relates to a physiological monitoring device. Some embodiments of the invention allow for long-term monitoring of physiological signals. Further embodiments may also allow for the monitoring of secondary signals such as motion.
    Type: Grant
    Filed: July 30, 2024
    Date of Patent: March 11, 2025
    Assignee: iRhythm Technologies, Inc.
    Inventors: Timothy J. Bahney, Hung H. Ho, Shena H. Park, Genaro S. Sepulveda, Mark J. Day, Yuriko Tamura
  • Patent number: 5912082
    Abstract: A process for polymerizing vinyl chloride alone or a mixture of vinyl chloride and other vinyl monomer(s) with hydroxy containing monomer(s), and the copolymer obtained thereby. The hydroxy containing monomer(s) is obtained by the partial allylation of dihydroxy or polyhydroxy alcohols. The copolymers are prepared by suspension polymerization. The presence of the hydroxyl groups significantly modifies the characteristics of the polymers. Plasticizer-take-up is increased and dry-time is reduced significantly. Furthermore, the hydroxyl groups become the sites for postpolymerization reactions due to their polarity and reactivity.
    Type: Grant
    Filed: April 29, 1996
    Date of Patent: June 15, 1999
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Hung S. Park, David A. Strickler, Anthony A. Parker
  • Patent number: 5863656
    Abstract: An improved method is provided for copolymerizing vinyl chloride with allyl glycidyl ether and a vinyl ester. The copolymers so formed include 70-99 weight percent of vinyl chloride, 0.05-15 weight percent of allyl glycidyl ether, and 0.05-15 weight percent of a vinyl ester, preferably vinyl acetate. The copolymers of this invention can be compounded to provide films exhibiting improved heat stability, low haze, and good adhesion to solid surfaces such as glass and metal. The compounded resins thus obtained may be especially advantageously used in forming the interlayer of laminated safety glazings, such as vehicle windshields and architectural glazings.The copolymerization of vinyl chloride, allyl glycidyl ether, a vinyl ester and small amounts of an unsaturated organic trifunctional silane provide self-adhesion without gelation.
    Type: Grant
    Filed: April 7, 1998
    Date of Patent: January 26, 1999
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Anthony A. Parker, David A. Strickler, Hung S. Park
  • Patent number: 5858542
    Abstract: An improved method is provided for copolymerizing vinyl chloride with allyl glycidyl ether and a vinyl ester. The copolymers so formed include 70-99 weight % of vinyl chloride, 0.05-15 weight % of allyl glycidyl ether, and 0.05-15 weight % of a vinyl ester, preferably vinyl acetate. The copolymers of this invention can be compounded to provide films exhibiting improved heat stability, low haze, and good adhesion to solid surfaces such as glass and metal. The compounded resins thus obtained may be especially advantageously used in forming the interlayer of laminated safety glazings, such as vehicle windshields and architectural glazings.
    Type: Grant
    Filed: March 21, 1997
    Date of Patent: January 12, 1999
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Hung S. Park, David A. Strickler, Anthony A. Parker
  • Patent number: 5756626
    Abstract: A process for polymerizing vinyl chloride alone or a mixture of vinyl chloride and other vinyl monomer(s) with hydroxy containing monomer(s), and the copolymer obtained thereby. The hydroxy containing monomer(s) is obtained by the partial allylation of dihydroxy or polyhydroxy alcohols. The copolymers are prepared by suspension polymerization. The presence of the hydroxyl groups significantly modifies the characteristics of the polymers. Plasticizer-take-up is increased and dry-time is reduced significantly. Furthermore, the hydroxyl groups become the sites for postpolymerization reactions due to their polarity and reactivity.
    Type: Grant
    Filed: August 7, 1996
    Date of Patent: May 26, 1998
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Hung S. Park, David A. Strickler, Anthony A. Parker
  • Patent number: 5756617
    Abstract: A process for polymerizing vinyl chloride alone or a mixture of vinyl chloride and other vinyl monomer(s) with hydroxy containing monomer(s), and the copolymer obtained thereby. The hydroxy containing monomer(s) is obtained by the partial allylation of dihydroxy or polyhydroxy alcohols. The copolymers are prepared by suspension polymerization. The presence of the hydroxyl groups significantly modifies the characteristics of the polymers. Plasticizer-take-up is increased and dry-time is reduced significantly. Furthermore, the hydroxyl groups become the sites for postpolymerization reactions due to their polarity and reactivity.
    Type: Grant
    Filed: September 17, 1996
    Date of Patent: May 26, 1998
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Hung S. Park, David A. Strickler, Anthony A. Parker
  • Patent number: 5747617
    Abstract: An improved method is provided for copolymerizing vinyl chloride with allyl glycidyl ether and a vinyl ester. The copolymers so formed include 70-99 weight percent of vinyl chloride, 0.05-15 weight percent of allyl glycidyl ether, and 0.05-15 weight percent of a vinyl ester, preferably vinyl acetate. The copolymers of this invention can be compounded to provide films exhibiting improved heat stability, low haze, and good adhesion to solid surfaces such as glass and metal. The compounded resins thus obtained may be especially advantageously used in forming the interlayer of laminated safety glazings, such as vehicle windshields and architectural glazings.The copolymerization of vinyl chloride, allyl glycidyl ether, a vinyl ester and small amounts of an unsaturated organic trifunctional silane provide self-adhesion without gelation.
    Type: Grant
    Filed: October 4, 1996
    Date of Patent: May 5, 1998
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Anthony A. Parker, David A. Strickler, Hung S. Park
  • Patent number: 5641845
    Abstract: An improved method is provided for copolymerizing vinyl chloride with allyl glycidyl ether and a vinyl ester. The copolymers so formed include 70-99 weight % of vinyl chloride, 0.05-15 weight % of allyl glycidyl ether, and 0.05-15 weight % of a vinyl ester, preferably vinyl acetate. The copolymers of this invention can be compounded to provide films exhibiting improved heat stability, low haze, and good adhesion to solid surfaces such as glass and metal. The compounded resins thus obtained may be especially advantageously used in forming the interlayer of laminated safety glazings, such as vehicle windshields and architectural glazings.
    Type: Grant
    Filed: August 11, 1995
    Date of Patent: June 24, 1997
    Assignee: Libbey-Owens-Ford Co.
    Inventors: Hung S. Park, David A. Strickler, Anthony A. Parker
  • Patent number: 4375533
    Abstract: A method for polymerizing olefinically unsaturated carboxylic acids containing at least one activated carbon to carbon olefinic double bond and at least one carboxyl group in an organic media in which said carboxylic acid is at least partially soluble, and a nonsolvent for the polymers of said carboxylic acid, in the presence of a free radical forming catalyst and a surface active agent having an HLB value in the range of less than 10.
    Type: Grant
    Filed: July 8, 1981
    Date of Patent: March 1, 1983
    Assignee: The BF Goodrich Company
    Inventors: Hung S. Park, August H. Jorgensen, Jr.
  • Patent number: 4345949
    Abstract: Polymerization reactor surfaces coated with carboxyl containing polymers may be readily cleaned by filling the polymerization reactor with an aqueous solution of a surface active agent and a polyvalent metal salt and heating to remove the polymer coating.
    Type: Grant
    Filed: January 30, 1981
    Date of Patent: August 24, 1982
    Assignee: The B. F. Goodrich Company
    Inventors: Hung S. Park, William D. Ryan, Jr., Harold L. Paine