Patents by Inventor Xinge Yu

Xinge Yu 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).

  • Publication number: 20050026832
    Abstract: The present invention is directed to novel polypeptides belonging to the fibroblast growth factor family and to nucleic acid molecules encoding those polypeptides. Also provided herein are vectors and host cells comprising those nucleic acid sequences, chimeric polypeptide molecules comprising the polypeptides of the present invention fused to heterologous polypeptide sequences, antibodies which bind to the polypeptides of the present invention and to methods for producing the polypeptides of the present invention. Furthermore, methods of treating obesity are provided.
    Type: Application
    Filed: May 26, 2004
    Publication date: February 3, 2005
    Inventors: Sean Adams, Audrey Goddard, Austin Gurney, Linu John, Timothy Stewart, Elizabeth Tomlinson, Xing Yu
  • Patent number: 6455384
    Abstract: A process for fabricating a MOSFET device, featuring source/drain extension regions, formed after the utilization of high temperature processes, such as heavily doped source/drain regions, has been developed. Disposable insulator spacers are formed on the sides of doped, SEG silicon regions, followed formation of a gate insulator layer, and an overlying gate structure, on a region of the semiconductor substrate located between the doped SEG silicon regions. The temperature experienced during these process steps result in the formation of the heavily doped source/drain, underlying the SEG silicon regions. Selective removal of the disposable spacers, allows the source/drain extension regions to be placed in the space vacated by the disposable spacers, adjacent to the heavily doped source/drain region. Insulator spacers are then used to fill the spaces vacated by removal of the disposable spacers, directly overlying the source/drain extension regions.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: September 24, 2002
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Ting Cheong Ang, Shyue Fong Quek, Jun Song, Xing Yu
  • Patent number: 6376319
    Abstract: A process for fabricating a MOSFET device, featuring source/drain extension regions, formed after the utilization of high temperature processes, such as heavily doped source/drain regions, has been developed. Disposable insulator spacers are formed on the sides of doped, SEG silicon regions, followed formation of a gate insulator layer, and an overlying gate structure, on a region of the semiconductor substrate located between the doped SEG silicon regions. The temperature experienced during these process steps result in the formation of the heavily doped source/drain, underlying the SEG silicon regions. Selective removal of the disposable spacers, allows the source/drain extension regions to be placed in the space vacated by the disposable spacers, adjacent to the heavily doped source/drain region. Insulator spacers are then used to fill the spaces vacated by removal of the disposable spacers, directly overlying the source/drain extension regions.
    Type: Grant
    Filed: October 9, 2001
    Date of Patent: April 23, 2002
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Ting Cheong Ang, Shyue Fong Quek, Jun Song, Xing Yu
  • Publication number: 20020019102
    Abstract: A process for fabricating a MOSFET device, featuring source/drain extension regions, formed after the utilization of high temperature processes, such as heavily doped source/drain regions, has been developed. Disposable insulator spacers are formed on the sides of doped, SEG silicon regions, followed formation of a gate insulator layer, and an overlying gate structure, on a region of the semiconductor substrate located between the doped SEG silicon regions. The temperature experienced during these process steps result in the formation of the heavily doped source/drain, underlying the SEG silicon regions. Selective removal of the disposable spacers, allows the source/drain extension regions to be placed in the space vacated by the disposable spacers, adjacent to the heavily doped source/drain region. Insulator spacers are then used to fill the spaces vacated by removal of the disposable spacers, directly overlying the source/drain extension regions.
    Type: Application
    Filed: October 9, 2001
    Publication date: February 14, 2002
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING LTD.
    Inventors: Ting Cheng Ang, Shyue Fong Quek, Jun Song, Xing Yu
  • Publication number: 20020013032
    Abstract: A process for fabricating a MOSFET device, featuring source/drain extension regions, formed after the utilization of high temperature processes, such as heavily doped source/drain regions, has been developed. Disposable insulator spacers are formed on the sides of doped, SEG silicon regions, followed formation of a gate insulator layer, and an overlying gate structure, on a region of the semiconductor substrate located between the doped SEG silicon regions. The temperature experienced during these process steps result in the formation of the heavily doped source/drain, underlying the SEG silicon regions. Selective removal of the disposable spacers, allows the source/drain extension regions to be placed in the space vacated by the disposable spacers, adjacent to the heavily doped source/drain region. Insulator spacers are then used to fill the spaces vacated by removal of the disposable spacers, directly overlying the source/drain extension regions.
    Type: Application
    Filed: October 9, 2001
    Publication date: January 31, 2002
    Applicant: CHARTERED SEMICONDUCTOR MANUFACTURING LTD.
    Inventors: Ting Cheong Ang, Shyue Fong Quek, Jun Song, Xing Yu
  • Patent number: 6319783
    Abstract: A process for fabricating a MOSFET device, featuring source/drain extension regions, formed after the utilization of high temperature processes, such as heavily doped source/drain regions, has been developed. Disposable insulator spacers are formed on the sides of doped, SEG silicon regions, followed formation of a gate insulator layer, and an overlying gate structure, on a region of the semiconductor substrate located between the doped SEG silicon regions. The temperature experienced during these process steps result in the formation of the heavily doped source/drain, underlying the SEG silicon regions. Selective removal of the disposable spacers, allows the source/drain extension regions to be placed in the space vacated by the disposable spacers, adjacent to the heavily doped source/drain region. Insulator spacers are then used to fill the spaces vacated by removal of the disposable spacers, directly overlying the source/drain extension regions.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: November 20, 2001
    Assignee: Chartered Semiconductor Manufatcuring Ltd.
    Inventors: Ting Cheong Ang, Shyue Pong Quek, Jun Song, Xing Yu
  • Patent number: 6218234
    Abstract: A method for integrating the dual gate and double poly capacitor processes to fabricate an analog capacitor integrated circuit device is described. An isolation region is provided separating a first active area from a second active area in a semiconductor substrate. A first gate oxide layer is formed overlying the semiconductor substrate in both active areas. A first polysilicon layer is deposited overlying the first gate oxide layer and the isolation region. An capacitor dielectric layer comprising an oxide layer and a nitride layer is deposited overlying the first polysilicon layer. The capacitor dielectric layer and first polysilicon layer are etched away where they are not covered by a mask to form a first polysilicon gate electrode in the first area and a polysilicon capacitor bottom plate and overlying capacitor dielectric overlying the isolation region. The first gate oxide layer is removed in the second area and a thinner second gate oxide layer is formed in the second area.
    Type: Grant
    Filed: April 26, 1999
    Date of Patent: April 17, 2001
    Assignee: Chartered Semiconductor Manufacturing, Ltd.
    Inventors: Xing Yu, Shao Kai
  • Patent number: 6100161
    Abstract: A method of fabricating a transistor, comprising the following steps. A silicon semiconductor substrate having a pad oxide portion within an active area is provided. A polysilicon layer is deposited over the silicon semiconductor substrate and over the pad oxide portion. A pad oxide layer is deposited over the polysilicon layer. Shallow isolation trench regions are formed on either side of the active area. The pad oxide layer is removed. The polysilicon layer is etched and removed over the pad oxide portion leaving polysilicon portions between the pad oxide portion and the shallow isolation trench regions. The pad oxide portion is replaced with a gate oxide portion. A gate conductor, having exposed side walls, is formed over the gate oxide portion and between the polysilicon portions. Sidewall spacers are formed on the exposed side walls of the gate conductor with the sidewall spacers contacting the polysilicon portions.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: August 8, 2000
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Xing Yu, Ying Keung Leung, Hong Yang, Shyue Fong Quek
  • Patent number: 6096647
    Abstract: A new method for forming a cobalt disilicide film on shallow junctions with reduced silicon consumption in the fabrication of an integrated circuit is described. A semiconductor substrate is provided having silicon regions to be silicided. A cobalt layer is deposited overlying the semiconductor substrate and subjected to a first rapid thermal process whereby the cobalt is transformed to cobalt monosilicide where it overlies the silicon regions and wherein the cobalt not overlying the silicon regions is unreacted. The unreacted cobalt layer is removed. A dielectric layer is deposited overlying the substrate and the cobalt monosilicide layer. Silicon ions are implanted through the dielectric layer into the cobalt monosilicide layer.
    Type: Grant
    Filed: October 25, 1999
    Date of Patent: August 1, 2000
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Hong Yang, Xing Yu, Ying Keung Leung
  • Patent number: 6090691
    Abstract: A method for forming a raised source and drain structure without using selective epitaxial silicon growth. A semiconductor substrate is provided having one or more gate areas covered by dielectric structures. Doped polysilicon structures are adjacent to the dielectric structures on each side and are co-planar with the dielectric structures from a CMP process. The first dielectric structures are removed to form gate openings and a liner oxide layer is formed on the bottom and sidewalls of the gate openings. Dielectric spacers are formed on the liner oxide layer over the sidewalls of the gate openings, and the liner oxide layer is removed from the bottom of the gate openings and from over the doped polysilicon structures. Source and drain regions are formed in the semiconductor substrate by diffusing impurity ions from the doped polysilicon layer. A gate oxide layer and a gate polysilicon layer are formed over the semiconductor structure and the gate polysilicon layer is planarized to form a gate electrode.
    Type: Grant
    Filed: November 15, 1999
    Date of Patent: July 18, 2000
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Ting Cheong Ang, Shyue Fong Quek, Xing Yu, Ying Keung Leung