Patents by Inventor Erwin W. Liang

Erwin W. Liang 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).

  • METHOD AND APPARATUS FOR FABRICATING OPTICAL SUBSTRATES
    Publication number: 20090067155
    Abstract: In one embodiment, an optical substrate that includes a prism structure modulated along a path in a lateral direction. The path is in the nature of a mathematical function defined over a segment, C, of a coordinate system and characterized by a set of nonrandom, random or pseudorandom parameters selected from the group consisting of amplitude, phase and frequency.
    Type: Application
    Filed: November 6, 2008
    Publication date: March 12, 2009
    Applicant: SABIC Innovative Plastics IP B.V.
    Inventors: Eugene Olczak, Erwin W. Liang
  • Method and apparatus for fabricating a light management substrates
    Patent number: 7452490
    Abstract: A method of machining a surface of a workpiece is accomplished by bringing a cutting tool into contact with the surface of the workpiece and for at least one cutting pass, i, causing relative movement between the cutting tool and the surface of the workpiece along a path in the surface of the workpiece. The path is in the nature of a mathematical function defined over a segment, C, of a coordinate system and characterized by a set of nonrandom, random or pseudorandom parameters selected from the group consisting of amplitude, phase and period or frequency.
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: November 18, 2008
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Eugene Olczak, Erwin W. Liang
  • Multi-layer composite rings for machine rotors
    Patent number: 7187096
    Abstract: An enclosure for a rotor in a generator including the rotor, rotor windings and a stator, the enclosure comprising a plurality of composite rings located adjacent one another along a length dimension of the rotor so as to contain the rotor windings on the rotor, the rings each comprising at least two layers selected from the group consisting essentially of metals, glass fiber laminates and graphite fiber laminates.
    Type: Grant
    Filed: October 6, 2003
    Date of Patent: March 6, 2007
    Assignee: General Electric Company
    Inventors: Yu Wang, Christopher Anthony Kaminski, Erwin W. Liang, Ronald Ralph Cairo, Wendy Wen-Ling Lin, Andrew Jay Salem
  • Method and apparatus for fabricating light management substrates
    Patent number: 6952627
    Abstract: A method of machining a surface of a workpiece is accomplished by bringing a cutting tool into contact with the surface of the workpiece and for at least one cutting pass, i, causing relative movement between the cutting tool and the surface of the workpiece along a path in the surface of the workpiece. The path is in the nature of a mathematical function defined over a segment, C, of a coordinate system and characterized by a set of nonrandom, random or pseudorandom parameters selected from the group consisting of amplitude, phase and period or frequency.
    Type: Grant
    Filed: December 18, 2002
    Date of Patent: October 4, 2005
    Assignee: General Electric Company
    Inventors: Eugene Olczak, Erwin W. Liang
  • Method and apparatus for fabricating a light management substrates
    Publication number: 20040120136
    Abstract: A method of machining a surface of a workpiece is accomplished by bringing a cutting tool into contact with the surface of the workpiece and for at least one cutting pass, i, causing relative movement between the cutting tool and the surface of the workpiece along a path in the surface of the workpiece. The path is in the nature of a mathematical function defined over a segment, C, of a coordinate system and characterized by a set of nonrandom, random or pseudorandom parameters selected from the group consisting of amplitude, phase and period or frequency.
    Type: Application
    Filed: December 18, 2002
    Publication date: June 24, 2004
    Inventors: Eugene Olczak, Erwin W. Liang