Patents by Inventor Zhi (Lewis) Liu

Zhi (Lewis) Liu 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: 9337065
    Abstract: A system for drying a surface of a substrate is provided. The system for drying a surface of a substrate comprising: a rotary support; a first dispenser fluidly coupled to a source of liquid, the first dispenser positioned above the surface of the substrate so as to be capable of applying a film of the liquid to the surface of the substrate; a second dispenser fluidly coupled to a source of drying fluid with a supply line, the second dispenser positioned above the surface of the substrate so as to be capable of applying the drying fluid to the surface of the substrate; and a proportional valve operably coupled to the supply line between the second dispenser and the source of drying fluid, the proportional valve capable of being incrementally adjusted from a closed position to an open position.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: May 10, 2016
    Inventors: Zhi Lewis Liu, Hanjoo Lee, Ismail Kashkoush
  • Publication number: 20140283884
    Abstract: A system for drying a surface of a substrate is provided. The system for drying a surface of a substrate comprising: a rotary support; a first dispenser fluidly coupled to a source of liquid, the first dispenser positioned above the surface of the substrate so as to be capable of applying a film of the liquid to the surface of the substrate; a second dispenser fluidly coupled to a source of drying fluid with a supply line, the second dispenser positioned above the surface of the substrate so as to be capable of applying the drying fluid to the surface of the substrate; and a proportional valve operably coupled to the supply line between the second dispenser and the source of drying fluid, the proportional valve capable of being incrementally adjusted from a closed position to an open position.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Applicant: Akrion Systems, LLC
    Inventors: Zhi Lewis Liu, Hanjoo Lee, Ismail Kashkoush
  • Patent number: 8739429
    Abstract: A system for drying a surface of a substrate is provided. The system for drying a surface of a substrate comprising: a rotary support; a first dispenser fluidly coupled to a source of liquid, the first dispenser positioned above the surface of the substrate so as to be capable of applying a film of the liquid to the surface of the substrate; a second dispenser fluidly coupled to a source of drying fluid with a supply line, the second dispenser positioned above the surface of the substrate so as to be capable of applying the drying fluid to the surface of the substrate; and a proportional valve operably coupled to the supply line between the second dispenser and the source of drying fluid, the proportional valve capable of being incrementally adjusted from a closed position to an open position.
    Type: Grant
    Filed: October 2, 2012
    Date of Patent: June 3, 2014
    Inventors: Zhi Lewis Liu, Hanjoo Lee, Ismail Kashkoush
  • Publication number: 20130167393
    Abstract: A system for drying a surface of a substrate is provided. The system for drying a surface of a substrate comprising: a rotary support; a first dispenser fluidly coupled to a source of liquid, the first dispenser positioned above the surface of the substrate so as to be capable of applying a film of the liquid to the surface of the substrate; a second dispenser fluidly coupled to a source of drying fluid with a supply line, the second dispenser positioned above the surface of the substrate so as to be capable of applying the drying fluid to the surface of the substrate; and a proportional valve operably coupled to the supply line between the second dispenser and the source of drying fluid, the proportional valve capable of being incrementally adjusted from a closed position to an open position.
    Type: Application
    Filed: October 2, 2012
    Publication date: July 4, 2013
    Inventors: Zhi Lewis Liu, Ismail Kashkoush, Hanjoo Lee
  • Patent number: 8276291
    Abstract: A method of drying a surface of a substrate is provided. The method includes supporting a substrate; rotating the substrate about a rotational center point; applying a liquid to the substrate via a liquid dispenser; applying a drying fluid to the substrate via a drying fluid dispenser; moving the drying fluid dispenser and the liquid dispenser in a direction toward an edge region of the substrate, the drying fluid being applied closer to the rotational center point than the fluid; upon the liquid being applied to the edge region of the substrate, discontinuing application of the liquid while continuing the manipulation of the drying fluid dispenser; and upon the drying fluid being applied to the edge region of the substrate, continuing to apply the drying fluid for a predetermined period of time.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: October 2, 2012
    Inventors: Zhi (Lewis) Liu, Ismail Kashkoush, Hanjoo Lee
  • Publication number: 20120061806
    Abstract: A method of drying a surface of a substrate is provided. The method includes supporting a substrate; rotating the substrate about a rotational center point; applying a liquid to the substrate via a liquid dispenser; applying a drying fluid to the substrate via a drying fluid dispenser; moving the drying fluid dispenser and the liquid dispenser in a direction toward an edge region of the substrate, the drying fluid being applied closer to the rotational center point than the fluid; upon the liquid being applied to the edge region of the substrate, discontinuing application of the liquid while continuing the manipulation of the drying fluid dispenser; and upon the drying fluid being applied to the edge region of the substrate, continuing to apply the drying fluid for a predetermined period of time.
    Type: Application
    Filed: November 15, 2011
    Publication date: March 15, 2012
    Inventors: Zhi (Lewis) Liu, Ismail Kashkoush, Hanjoo Lee
  • Patent number: 8056253
    Abstract: A system of drying a surface of a substrate is provided. The system includes a rotary support for supporting a substrate; and an assembly comprising a first dispenser, a second dispenser, and a third dispenser, the assembly positioned above the surface of the substrate, the second and third dispensers positioned on the assembly adjacent to and in contact with one another and spaced from the first dispenser, the second dispenser having an opening that is larger than an opening of the third dispenser, and the second dispenser being located between the first and third dispensers; and means for translating the assembly generally parallel to the surface of the substrate.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: November 15, 2011
    Inventors: Zhi (Lewis) Liu, Ismail Kashkoush, Hanjoo Lee
  • Publication number: 20100293806
    Abstract: A system of drying a surface of a substrate is provided. The system includes a rotary support for supporting a substrate; and an assembly comprising a first dispenser, a second dispenser, and a third dispenser, the assembly positioned above the surface of the substrate, the second and third dispensers positioned on the assembly adjacent to and in contact with one another and spaced from the first dispenser, the second dispenser having an opening that is larger than an opening of the third dispenser, and the second dispenser being located between the first and third dispensers; and means for translating the assembly generally parallel to the surface of the substrate.
    Type: Application
    Filed: January 12, 2010
    Publication date: November 25, 2010
    Inventors: Zhi (Lewis) Liu, Ismail Kashkoush, Hanjoo Lee
  • Patent number: 7644512
    Abstract: A method of drying a surface of a substrate is provided. The method includes supporting and rotating a substrate; applying a liquid to the substrate surface at or near a rotational center point via a liquid dispenser (so that a film of the liquid is formed on the surface); applying a drying fluid to the substrate surface at a predetermined distance from the rotational center point via one or more drying fluid dispensers; and manipulating the drying fluid dispenser(s) so that the location at which the drying fluid is applied to the substrate is moved in a direction toward the rotational center point, while at the same time manipulating the liquid dispenser so that the location at which the liquid is applied to the substrate is moved in a direction outward from the rotational center point. The liquid dispenser and drying fluid dispenser(s) noted above can be located on and/or within an assembly. The assembly can include a first dispenser, a second dispenser, and a third dispenser.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: January 12, 2010
    Inventors: Zhi (Lewis) Liu, Ismail Kashkoush, Hanjoo Lee
  • Publication number: 20060021634
    Abstract: A method and system for creating an ozonated process solution, such as ozonated deionized water, having high ozone concentration. The system comprises, a static mixer coupled to a recirculation loop of an auxiliary tank. The system and method are designed so that during the initial feed of process liquid and ozone gas to the system, the process liquid and ozone gas pass through the static mixer prior to ever reaching the auxiliary. The static mixer mixes the ozone gas into the process liquid to form the ozonated process solution. Thus, the auxiliary tank is initially filled with an ozonated process solution. The ozonated process solution can be recirculated from the auxiliary tank and back through the static mixer while additional ozone gas is dissolved therein. This recirculation can be performed until a desired concentration of ozone is detected in the ozonated process solution.
    Type: Application
    Filed: July 8, 2005
    Publication date: February 2, 2006
    Inventors: Zhi (Lewis) Liu, Richard Novak, Alan Walter, Nick Yialamas