Patents by Inventor Huatan Qiu

Huatan Qiu 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: 8110068
    Abstract: Systems, system components, and methods for plasma stripping are provided. In an embodiment, a gas flow distribution receptacle may have a rounded section that includes an inner surface defining a reception cavity, an outer surface forming an enclosed end, and a centerpoint on the outer surface having a longitudinal axis extending therethrough and through the reception cavity. First and second rings of openings provide flow communication with the plasma chamber. The second ring of openings are disposed between the first ring and the centerpoint, and each opening of the second ring of openings extends between the inner and outer surfaces at a second angle relative to the longitudinal axis that is less than the first angle and has a diameter that is substantially identical to a diameter of an adjacent opening and smaller than the diameters of an opening of the first ring of openings.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: February 7, 2012
    Assignee: Novellus Systems, Inc.
    Inventors: Huatan Qiu, Woody Chung, Anirban Guha, David Cheung
  • Publication number: 20090250334
    Abstract: Systems and methods of forming plasma are provided. In an embodiment, a plasma generator system is provided including a container, a single coil disposed around the container, the single coil being a single member and having a first end, a second end, a first winding, and a second winding, wherein the first winding extends from the first end, and the second winding is integrally formed as part of the first winding and extends to the second end, an energy source electrically coupled directly to the first end of the single member, and a capacitor electrically coupled directly to the second end of the single member.
    Type: Application
    Filed: April 3, 2008
    Publication date: October 8, 2009
    Applicant: NOVELLUS SYSTEMS, INC.
    Inventors: Huatan Qiu, David Cheung, Prashanth Kothnur
  • Publication number: 20090236313
    Abstract: Systems, system components, and methods for plasma stripping are provided. In an embodiment, a gas flow distribution receptacle may have a rounded section that includes an inner surface defining a reception cavity, an outer surface forming an enclosed end, and a centerpoint on the outer surface having a longitudinal axis extending therethrough and through the reception cavity. First and second rings of openings provide flow communication with the plasma chamber. The second ring of openings are disposed between the first ring and the centerpoint, and each opening of the second ring of openings extends between the inner and outer surfaces at a second angle relative to the longitudinal axis that is less than the first angle and has a diameter that is substantially identical to a diameter of an adjacent opening and smaller than the diameters of an opening of the first ring of openings.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 24, 2009
    Applicant: NOVELLUS SYSTEMS, INC.
    Inventors: Huatan QIU, Woody CHUNG, Anirban GUHA, David CHEUNG
  • Patent number: 7528386
    Abstract: A system for non-contact cleaning of particulate contamination of surfaces includes one or more sources that create a charge imbalance between a surface and particles that contaminate the surface, and a power supply that creates a pulsed electrical bias on the surface. This imbalance produces an electrostatic force that propels the particles off the surface. The cleaning process can be associated, for example, with microelectronic lithography and manufacturing.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: May 5, 2009
    Assignee: Board of Trustees of University of Illinois
    Inventors: David N. Ruzic, Brian E. Jurczyk, Darren Alman, Martin J. Neumann, Huatan Qiu
  • Publication number: 20060237667
    Abstract: A system for non-contact cleaning of particulate contamination of surfaces includes one or more sources that create a charge imbalance between a surface and particles that contaminate the surface, and a power supply that creates a pulsed electrical bias on the surface. This imbalance produces an electrostatic force that propels the particles off the surface. The cleaning process can be associated, for example, with microelectronic lithography and manufacturing.
    Type: Application
    Filed: December 5, 2005
    Publication date: October 26, 2006
    Inventors: David Ruzic, Brian Jurczyk, Darren Alman, Martin Neumann, Huatan Qiu