Patents by Inventor Baichao Yu

Baichao Yu 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: 6738276
    Abstract: An on-line UPS has radio frequency filter, rectifier filter, battery, detecting circuit, controlling circuit and trigger circuit, and its efficiency approximate a hundred percent. No matter what commercial power is failure, or its voltage is too high or too low, it is able to keep voltage output within normal range. When commercial power is abnormal, it supplies power with battery by automatic switchover, and its response time is zero millisecond. The structure of the present invention is simple and its operation is stable. It has removed the power converter of UPS on the condition that all necessary features are maintained. The costs, volume, weight and power loss decrease to a percent of conventional UPS of same power.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: May 18, 2004
    Assignee: Tri-Mag, Inc.
    Inventor: Baichao Yu
  • Publication number: 20030002308
    Abstract: An on-line UPS has radio frequency filter, rectifier filter, battery, detecting circuit, controlling circuit and trigger circuit, and its efficiency approximate a hundred percent. No matter what commercial power is failure, or its voltage is too high or too low, it is able to keep voltage output within normal range. When commercial power is abnormal, it supplies power with battery by automatic switchover, and its response time is zero millisecond. The structure of the present invention is simple and its operation is stable. It has removed the power converter of UPS on the condition that all necessary features are maintained. The costs, volume, weight and power loss decrease to a percent of conventional UPS of same power.
    Type: Application
    Filed: June 28, 2002
    Publication date: January 2, 2003
    Inventor: Baichao Yu