Patents by Inventor Yong-Hau Foo

Yong-Hau Foo 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: 20030184234
    Abstract: An electrode device for a plasma processing system is presented. The electrode device is installed in a chamber of the plasma processing system. The electrode device comprises a plurality of electrode assemblies. Each electrode assembly has at least one first electrode and at least one second electrode. The first electrode is connected to a first output of a power supply, and the second electrode, connected to a second output of the power supply. Each electrode assembly is spaced apart from each other so as to generate plasma in the chamber. The electrode assembly comprises at least two electrodes (the first electrode and the second electrode) with shorter distance between the electrodes, and the type of the power supply can be altered to increase the electric field intensity, the hollow cathode effect, plasma density and uniformity. The electrode device can raise the efficiency in processing the object, and increase the uniformity of the electric field and upgrade the quality of the object.
    Type: Application
    Filed: November 13, 2002
    Publication date: October 2, 2003
    Applicants: Nano Electronics and Micro System Technologies, Inc., S&S Laminates Corporation
    Inventors: Chia-Yuan Hsu, Yong-Hau Foo, Jin-Fong Yen, Yeou-Yih Tsai, Chong-Ren Maa
  • Patent number: 6603091
    Abstract: A cleaning device with deeply reaching plasma and assisting electrodes has supporting racks, a chamber, a plasma sources, metallic grids. Flat boards to be cleaned such as circuit boards are located in the supporting racks. The supporting racks are disposed in the chamber. The metallic grids are disposed on two sides of the chamber. The plasma source is disposed next to the metallic grids. Electric voltage is applied to the metallic grids such that plasma from the plasma source can be pushed deeply into the supporting racks to evenly and sufficiently clean the circuit boards.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: August 5, 2003
    Assignee: Nano Electronics and Micro System Technologies, Inc.
    Inventors: Chia-Yuan Hsu, Yong-Hau Foo, Paul Hong
  • Patent number: 6476341
    Abstract: A cleaning device with deeply reaching plasma and assisting electrodes has supporting racks, a chamber, a plasma sources, metallic grids. Flat boards to be cleaned such as circuit boards are located in the supporting racks. The supporting racks are disposed in the chamber. The metallic grids are disposed on two sides of the chamber. The plasma source is disposed next to the metallic grids. Electric voltage is applied to the metallic grids such that plasma from the plasma source can be pushed deeply into the supporting racks to evenly and sufficiently clean the circuit boards.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: November 5, 2002
    Assignee: Advanced Plasma and Thin Films Technologies, Inc.
    Inventors: Chia-Yuan Hsu, Yong-Hau Foo, Paul Hong
  • Publication number: 20020117480
    Abstract: A cleaning device with deeply reaching plasma and assisting electrodes has supporting racks, a chamber, a plasma sources, metallic grids. Flat boards to be cleaned such as circuit boards are located in the supporting racks. The supporting racks are disposed in the chamber. The metallic grids are disposed on two sides of the chamber. The plasma source is disposed next to the metallic grids. Electric voltage is applied to the metallic grids such that plasma from the plasma source can be pushed deeply into the supporting racks to evenly and sufficiently clean the circuit boards.
    Type: Application
    Filed: April 4, 2002
    Publication date: August 29, 2002
    Inventors: Chia-Yuan Hsu, Yong-Hau Foo, Paul Hong
  • Publication number: 20010020477
    Abstract: A cleaning device with deeply reaching plasma and assisting electrodes has supporting racks, a chamber, a plasma. sources, metallic grids. Flat boards to be cleaned such as circuit boards are located in the supporting racks. The supporting racks are disposed in the chamber. The metallic grids are disposed on two sides of the chamber. The plasma source is disposed next to the metallic grids. Electric voltage is applied to the metallic grids such that plasma from the plasma source can be pushed deeply into the supporting racks to evenly and sufficiently clean the circuit boards.
    Type: Application
    Filed: December 22, 2000
    Publication date: September 13, 2001
    Inventors: Chia-Yuan Hsu, Yong-Hau Foo, Paul Hong