Patents by Inventor Herbert Shin-I Chao

Herbert Shin-I Chao 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).

  • Composition and method for enhancing the surface adhesion of polyurethane foam to surfaces of thermoplastic blends
    Patent number: 6303216
    Abstract: A composition and method for promoting improved adhesion between a thermoplastic resinous substrate and polyurethane foam is provided. In one aspect of this invention, the composition comprises a thermoplastic mixture of at least one polyphenylene ether and at least one poly(alkenylaromatic) compound; and at least one primary amine-containing material or secondary amine-containing material.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: October 16, 2001
    Assignee: General Electric Company
    Inventors: Herbert Shin-I Chao, Geoffrey Henry Riding, David John Swanson
  • Method for attaching a fluoride-based polymer layer to a polyphenylene ether or polystyrene layer, and related articles
    Patent number: 6303224
    Abstract: This invention is directed to a tie layer for improving the adhesion of a layer of a fluoride-based polymeric material to a layer of a polyphenylene ether- or polystyrene-based material. The tie layer comprises a copolymer of a styrenic material like high impact polystyrene, and an acrylic material such as poly(methyl methacrylate) (PMMA). The tie layer composition may further include at least one flexibilizing agent which is compatible with one of the materials in the other layers. Exemplary flexibilizing agents are blends or copolymers which comprise rubber and polystyrene, or core-shell impact modifiers, or combinations of these types of materials. The layers can be coextruded or laminated, using conventional techniques.
    Type: Grant
    Filed: June 3, 1998
    Date of Patent: October 16, 2001
    Assignees: General Electric Co., Elf Atochem North America, Inc., Elf Autochem S.A.
    Inventors: John R. Krahn, Herbert Shin-I Chao
  • Composition and method for enhancing the surface adhesion of polyurethane foam to surfaces of thermoplastic blends
    Patent number: 6147161
    Abstract: A composition and method for promoting improved adhesion between a thermoplastic resinous substrate and polyurethane foam is provided. In one aspect of this invention, the composition comprises a thermoplastic mixture of at least one polyphenylene ether and at least one poly(alkenylaromatic) compound; and at least one primary amine-containing material or secondary amine-containing material.
    Type: Grant
    Filed: April 6, 1999
    Date of Patent: November 14, 2000
    Assignee: General Electric Company
    Inventors: Herbert Shin-I Chao, Geoffrey Henry Riding, David John Swanson
  • Composition and method for improved heat performance in a polyphenylene ether containing substrate
    Patent number: 5952417
    Abstract: The invention provides a composition for a platable resinous substrate having enhanced heat performance comprising: a thermoplastic mixture of at least one polyphenylene ether and at least one poly(alkenylaromatic) compound, at least one rubber compound, and at least one inorganic filler material.
    Type: Grant
    Filed: December 17, 1996
    Date of Patent: September 14, 1999
    Assignee: General Electric Co.
    Inventors: Herbert Shin-I Chao, Geoffrey Henry Riding, Carol Lynn Fasoldt
  • Composition and method for enhancing the surface adhesion of polyurethane foam to surfaces of thermoplastic blends
    Patent number: 5756196
    Abstract: A composition and method for promoting improved adhesion between a thermoplastic resinous substrate and polyurethane foam is provided. In one aspect of this invention, the composition comprises a thermoplastic mixture of at least one polyphenylene ether and at least one poly(alkenylaromatic) compound; and at least one primary amine-containing material or secondary amine-containing material.
    Type: Grant
    Filed: December 19, 1996
    Date of Patent: May 26, 1998
    Assignee: General Electric Company
    Inventors: Herbert Shin-I Chao, Geoffrey Henry Riding, David John Swanson
  • Method of improving adhesion of polyurethane foam to polycarbonate and articles made thereby
    Patent number: 5688837
    Abstract: A method improves the adhesion of polyurethane foam to polycarbonate by providing reactive groups on the polycarbonate surface. The adhesion is further improved by utilizing a polyurethane mix with an isocyanate index greater than 82. Articles comprising polycarbonate and polyurethane foam adhered to the polycarbonate by the method of the instant invention, such as automobile dashboards, are also provided.
    Type: Grant
    Filed: September 25, 1995
    Date of Patent: November 18, 1997
    Assignee: General Electric Company
    Inventors: Herbert Shin-I Chao, Carol Lynn Fasoldt, Abbas Mohamad Safieddine, Christian Lietzau
  • Preparation of electroless nickel coating having improved properties
    Patent number: 5397599
    Abstract: Increases in surface resistivity of electroless nickel coatings on polycarbonate-containing substrates are inhibited by employing two electroless nickel plating solutions. The first solution is one which deposits a metal layer containing phosphorus, if any, in an amount up to 5% by weight and is used to deposit a layer at least 0.5 micron thick. The second solution is one which deposits a layer containing phosphorus in the amount of at least 5% and preferably at least 6% by weight. Another metal layer may be interposed between the two nickel layers.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: March 14, 1995
    Assignee: General Electric Company
    Inventors: Herbert Shin-I Chao, Bradley R. Karas, Donald F. Foust