Patents by Inventor Thomas C. Yuan

Thomas C. Yuan 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: 7804147
    Abstract: A method for fabricating a light emitting diode (LED) package comprising providing an LED chip and covering at least part of the LED chip with a liquid encapsulant having a radius of curvature. An optical element is provided having a bottom surface with at least a portion having a radius of curvature larger than the liquid encapsulant. The larger radius of curvature portion of the optical element is brought into contact with the liquid encapsulant. The optical element is then moved closer to the LED chip, growing the contact area between said optical element and said liquid encapsulant. The liquid encapsulant is then cured. A light emitting diode comprising a substrate with an LED chip mounted to it. A meniscus ring is on the substrate around the LED chip with the meniscus ring having a meniscus holding feature.
    Type: Grant
    Filed: July 31, 2006
    Date of Patent: September 28, 2010
    Assignee: Cree, Inc.
    Inventors: Eric Tarsa, Thomas C. Yuan, Maryanne Becerra, Praveen Yadev
  • Publication number: 20080026498
    Abstract: A method for fabricating a light emitting diode (LED) package comprising providing an LED chip and covering at least part of the LED chip with a liquid encapsulant having a radius of curvature. An optical element is provided having a bottom surface with at least a portion having a radius of curvature larger than the liquid encapsulant. The larger radius of curvature portion of the optical element is brought into contact with the liquid encapsulant. The optical element is then moved closer to the LED chip, growing the contact area between said optical element and said liquid encapsulant. The liquid encapsulant is then cured. A light emitting diode comprising a substrate with an LED chip mounted to it. A meniscus ring is on the substrate around the LED chip with the meniscus ring having a meniscus holding feature.
    Type: Application
    Filed: July 31, 2006
    Publication date: January 31, 2008
    Inventors: Eric Tarsa, Thomas C. Yuan, Maryanne Becerra, Praveen Yadev
  • Patent number: 6949307
    Abstract: A method, apparatus and assembly related to solid oxide fuel cell interconnects is disclosed. In its broadest embodiment, the invention contemplates a multi-layered ceramic interconnect having integrated flow fields and electrical connections. The method of making this interconnect includes judicious selection of materials, formation of appropriate apertures for the flow fields and electrical connectors, and the joining of the layers through a firing and/or sealing process.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: September 27, 2005
    Assignee: SFCo-EFS Holdings, LLC
    Inventors: Thomas L. Cable, Kurt E. Kneidel, Eric A. Barringer, Thomas C. Yuan
  • Publication number: 20030077498
    Abstract: A method, apparatus and assembly related to solid oxide fuel cell interconnects is disclosed. In its broadest embodiment, the invention contemplates a multi-layered ceramic interconnect having integrated flow fields and electrical connections. The method of making this interconnect includes judicious selection of materials, formation of appropriate apertures for the flow fields and electrical connectors, and the joining of the layers through a firing and/or sealing process.
    Type: Application
    Filed: October 19, 2001
    Publication date: April 24, 2003
    Inventors: Thomas L. Cable, Kurt E. Kneidel, Eric A. Barringer, Thomas C. Yuan
  • Patent number: 4678761
    Abstract: Magnesium oxide ceramic bodies may be strengthened by inclusion of zirconium oxide particles, and may be further sintered to a density approaching theoretical density by conventional sintering techniques by inclusion of sintering aids, such as manganese oxide and iron oxide.
    Type: Grant
    Filed: October 29, 1985
    Date of Patent: July 7, 1987
    Assignee: The Dow Chemical Company
    Inventors: Anil Virkar, Thomas C. Yuan