Patents by Inventor Chao Feng Xu

Chao Feng Xu 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: 20090096347
    Abstract: An LED flat light and a manufacturing method thereof including processes of preparing a substrate, mounting a support, dispensing an under-fill, mounting an LED chip, wire bonding, dispensing fluorescent powder, and LED packaging; and the finished product of LED flat light includes a substrate provided with multiple insertion holes, each hole being disposed to its peripheral a positive golden finger and a negative golden finger; multiple LED modules electrically connected to one another for each module corresponding to one insertion hole; the insertion hole includes a support comprised of a base and a base cup with the base cup placed in the insertion hole; an LED chip being fixed in the base cup; and both positive and negative electrodes of the LED chip being electrically connected to their corresponding golden fingers on the substrate; the LED chip being covered up with a fluorescent powder layer, where in turn being covered up with a sealing layer to allow firm combination among member of the LED flat ligh
    Type: Application
    Filed: October 11, 2007
    Publication date: April 16, 2009
    Inventor: Chao-Feng XU
  • Patent number: D578492
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: October 14, 2008
    Assignee: Powerthink Optoelectronics Co., Ltd.
    Inventor: Chao Feng Xu