Patents by Inventor Kehai Li

Kehai Li 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).

  • Arc welder and related system
    Patent number: 9233432
    Abstract: A welder for welding a base metal. The welder may include a first electrode for forming a first arc with the base metal and a second electrode for forming a second arc between the first and second electrodes. A compact welder, welding system, and method are also provided.
    Type: Grant
    Filed: February 11, 2008
    Date of Patent: January 12, 2016
    Inventors: YuMing Zhang, Kehai Li
  • Arc Welder and Related System
    Publication number: 20080190900
    Abstract: A welder for welding a base metal. The welder may include a first electrode for forming a first arc with the base metal and a second electrode for forming a second arc between the first and second electrodes. A compact welder, welding system, and method are also provided.
    Type: Application
    Filed: February 11, 2008
    Publication date: August 14, 2008
    Inventors: YuMing Zhang, Kehai Li