Patents by Inventor Kwongyee Hung

Kwongyee Hung 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).

  • Anti-surge power adapter
    Patent number: 7561398
    Abstract: An anti-surge power adapter comprising: a transformer; a pair of copper sheets which, with a certain gap between themselves, is connected between said transformer and the power input terminal or on the said transformer to release instantaneous surge. The present invention features low cost, simple process and high reliability, and only requires two copper sheets or a PCB or other insulating board with copper sheets to be connected in the circuitry. The anti-surge power adapter uses copper sheets to release instantaneous high voltage, features quick response and can withstand an instantaneous high voltage of 6-17 KV. This invention is applicable to linear or switching power adapter.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: July 14, 2009
    Inventor: Kwongyee Hung
  • Anti-Surge Power Adapter
    Publication number: 20080137241
    Abstract: An anti-surge power adapter comprising: a transformer; a pair of copper sheets which, with a certain gap between themselves, is connected between said transformer and the power input terminal or on the said transformer to release instantaneous surge. The present invention features low cost, simple process and high reliability, and only requires two copper sheets or a PCB or other insulating board with copper sheets to be connected in the circuitry. The anti-surge power adapter uses copper sheets to release instantaneous high voltage, features quick response and can withstand an instantaneous high voltage of 6-17 KV. This invention is applicable to linear or switching power adapter.
    Type: Application
    Filed: December 6, 2006
    Publication date: June 12, 2008
    Inventor: Kwongyee Hung
  • Power supply
    Patent number: D568814
    Type: Grant
    Filed: January 10, 2006
    Date of Patent: May 13, 2008
    Inventor: Kwongyee Hung