Patents by Inventor Tung-Yao Weng

Tung-Yao Weng 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).

  • Polyester-containing biaxially-oriented polypropylene films
    Patent number: 6607834
    Abstract: Polyester-containing multilayer biaxially-oriented polypropylene films are provided. According to the invention, a two- or three-layer polyester-containing cap layer is bonded to a monoaxially oriented polypropylene core, followed by orientation of the resulting composite in a direction transverse to the direction of orientation of the core layer. At least one tie layer is interposed between the core and the polyester. Advantageously, the polyester contains silicone fluid as a processing aid.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: August 19, 2003
    Assignee: Applied Extrusion Technologies, Inc.
    Inventors: Alan M. Davis, John H. Lawrence, Tung-Yao Weng
  • Polyester-containing biaxially-oriented polypropylene films
    Publication number: 20020009605
    Abstract: Polyester-containing multilayer biaxially-oriented polypropylene films are provided. According to the invention, a two- or three-layer polyester-containing cap layer is bonded to a monoaxially oriented polypropylene core, followed by orientation of the resulting composite in a direction transverse to the direction of orientation of the core layer. At least one tie layer is interposed between the core and the polyester. Advantageously, the polyester contains silicone fluid as a processing aid.
    Type: Application
    Filed: March 7, 2001
    Publication date: January 24, 2002
    Applicant: QPF, L.L.C.
    Inventors: Alan M. Davis, John H. Lawrence, Tung-Yao Weng
  • Polyester-containing biaxially-oriented polypropylene films and method of making the same
    Patent number: 6221191
    Abstract: Polyester-containing multilayer biaxially-oriented polypropylene films are provided. According to the invention, a two- or three-layer polyester-containing cap layer is bonded to a monoaxially oriented polypropylene core, followed by orientation of the resulting composite in a direction transverse to the direction of orientation of the core layer. At least one tie layer is interposed between the core and the polyester. Advantageously, the polyester contains silicone fluid as a processing aid.
    Type: Grant
    Filed: February 7, 1997
    Date of Patent: April 24, 2001
    Assignee: QPF, L.L.C.
    Inventors: Alan M. Davis, John H. Lawrence, Tung-Yao Weng
  • Masking film having embossed areas and unembossed areas
    Patent number: 5693405
    Abstract: An embossed thermoplastic film having a first side having a substantially smooth surface and a second side having a partially embossed surface on its surface.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: December 2, 1997
    Assignee: Tredegar Industries, Inc.
    Inventors: William Edwin Harvie, Tung-Yao Weng