Patents by Inventor John H. Hung

John H. Hung 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: 5504129
    Abstract: The specification discloses an aqueous dispersion for coatings consisting essentially of water and a water dispersible component, wherein the water dispersible component is provided by reacting maleic anhydride with a rosin ester to provide a maleated rosin ester, adding wax and preferably also an ethylene vinyl acetate copolymer to the maleated rosin ester, and adding a tertiary amino alcohol to the mixture to yield the water dispersible component as a reaction product thereof. When used in a coating formulation for paper, clay and/or latex may be added to the formulation. In one preferred embodiment, the dispersion is applied as a coating to paper to enhance toner adhesion to the surface of the paper while also providing a relatively low friction surface.
    Type: Grant
    Filed: December 8, 1993
    Date of Patent: April 2, 1996
    Assignees: International Paper Company, Arizona Chemical Company
    Inventors: Gary F. Dandreaux, John T. Geoghegan, Long S. Wang, Lori S. Slovik, John H. Hung
  • Patent number: 4439391
    Abstract: Polymeric sheets having on one or both sides a fabric texture and, optionally, a network of elongated channels in the interior of the structural framework of the sheets are disclosed. The sheets are useful as burn coverings where they serve as synthetic, temporary replacements for damaged or missing skin. The sheets have physiologic properties similar to human skin, excellent drapability characteristics, recessed portions which provide a reservoir for wound debris and, in certain embodiments, a dermal surface which permits wound adherence by fibroblastic ingrowth.In one embodiment, laminated sheets in which only one side has a fabric texture are prepared by (1) applying one or more layers of polymer to a support surface, (2) partially embedding a sheet having a fabric texture in the layer of polymer, (3) curing or hardening the polymer to form a composite of the sheet and polymer, and (4) separating the composite from the forming surface.
    Type: Grant
    Filed: January 7, 1981
    Date of Patent: March 27, 1984
    Assignee: International Paper Company
    Inventor: John H. Hung
  • Patent number: 4289125
    Abstract: Polymeric sheets having on one or both sides a fabric texture and, optionally, a network of elongated channels in the interior of the structural framework of the sheets. In one embodiment, the sheets comprise a plurality of interbonded continuous polymeric ribs extending in a direction parallel to the plane of the sheets. These ribs impart a fabric texture to both sides of the sheets and define between them recessed portions on each surface of the sheets. The elongated channels extend throughout the ribs. The open area between the ribs can vary from zero to 60%. In another embodiment, the sheets have an ultra-thin, pinhole-free polymeric membrane on one side and a fabric texture on the other side. The sheets are useful as burn coverings where they serve as synthetic, temporary replacements for damaged or missing skin.
    Type: Grant
    Filed: June 26, 1979
    Date of Patent: September 15, 1981
    Assignee: International Paper Company
    Inventor: John H. Hung
  • Patent number: 4175557
    Abstract: Polymeric sheets having on one or both sides a fabric texture and, optionally, a network of elongated channels in the interior of the structural framework of the sheets. The sheets comprise a plurality of interbonded continuous polymeric ribs extending in a direction parallel to the plane of the sheets. These ribs impart a fabric texture to both sides of the sheets and define between them recessed portions on each surface of the sheets. The elongated channels extend throughout the ribs. The open area between the ribs can vary from zero to 60%. In another embodiment, the sheets have an ultra-thin, pinhole-free polymeric membrane on one side and a fabric texture on the other side. The sheets are useful as burn coverings where they serve as synthetic, temporary replacements for damaged or missing skin.
    Type: Grant
    Filed: November 1, 1976
    Date of Patent: November 27, 1979
    Assignee: International Paper Company
    Inventor: John H. Hung