Patents by Inventor Tongchun Zhao

Tongchun Zhao 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).

  • Compound magnetic powder and magnetic powder cores, and methods for making them thereof
    Patent number: 8048191
    Abstract: The present invention provides a compound powder for making magnetic powder cores, a kind of magnetic powder core, and a process for making them. Said compound powder is a mixture composing of powder A and powder B, the content of powder A is 50-96 wt % and the content of powder B is 4-50 wt %, wherein powder A is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder; powder B bears different requirement characteristics from powder A and is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder. Said powder B adopts Fe-based amorphous soft magnetic powder with good insulation property as insulating agent and thus core loss of magnetic powder core decreases.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: November 1, 2011
    Assignees: Advanced Technology & Material Co., Ltd., Central Iron & Steel Research Institute
    Inventors: Zhichao Lu, Deren Li, Shaoxiong Zhou, Caowei Lu, Feng Guo, Jianliang Li, Jun Wang, Tongchun Zhao, Liang Zhang
  • COMPOUND MAGNETIC POWDER AND MAGNETIC POWDER CORES, AND METHODS FOR MAKING THEM THEREOF
    Publication number: 20100031773
    Abstract: The present invention provides a compound powder for making magnetic powder cores, a kind of magnetic powder core, and a process for making them. Said compound powder is a mixture composing of powder A and powder B, the content of powder A is 50-96 wt. % and the content of powder B is 4-50 wt. %, wherein powder A is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder; powder B bears different requirement characteristics from powder A and is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder. Said powder B adopts Fe-based amorphous soft magnetic powder with good insulation property as insulating agent and thus core loss of magnetic powder core decreases.
    Type: Application
    Filed: October 19, 2009
    Publication date: February 11, 2010
    Inventors: Zhichao Lu, Deren Li, Shaoxiong Zhou, Caowei Lu, Feng Guo, Jianliang Li, Jun Wang, Tongchun Zhao, Liang Zhang
  • COMPOUND MAGNETIC POWDER AND MAGNETIC POWDER CORES, AND METHODS FOR MAKING THEM THEREOF
    Publication number: 20100034687
    Abstract: The present invention provides a compound powder for making magnetic powder cores, a kind of magnetic powder core, and a process for making them. Said compound powder is a mixture composing of powder A and powder B, the content of powder A is 50-96 wt. % and the content of powder B is 4-50 wt. %, wherein powder A is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder; powder B bears different requirement characteristics from powder A and is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder. Said powder B adopts Fe-based amorphous soft magnetic powder with good insulation property as insulating agent and thus core loss of magnetic powder core decreases.
    Type: Application
    Filed: October 19, 2009
    Publication date: February 11, 2010
    Inventors: Zhichao Lu, Deren Li, Shaoxiong Zhou, Caowei Lu, Feng Guo, Jianliang Li, Jun Wang, Tongchun Zhao, Liang Zhang
  • COMPOUND MAGNETIC POWDER AND MAGNETIC POWDER CORES, AND METHODS FOR MAKING THEM THEREOF
    Publication number: 20070144614
    Abstract: The present invention provides a compound powder for making magnetic powder cores, a kind of magnetic powder core, and a process for making them. Said compound powder is a mixture composing of powder A and powder B, the content of powder A is 50-96 wt % and the content of powder B is 4-50 wt %, wherein powder A is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder; powder B bears different requirement characteristics from powder A and is at least one selected from iron powder, Fe—Si powder, Fe—Si—Al powder, Fe-based nanocrystalline powder, Fe-based amorphous powder, Fe—Ni powder and Fe—Ni—Mo powder. Said powder B adopts Fe-based amorphous soft magnetic powder with good insulation property as insulating agent and thus core loss of magnetic powder core decreases.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 28, 2007
    Inventors: Zhichao Lu, Deren Li, Shaoxiong Zhou, Caowei Lu, Feng Guo, Jianliang Li, Jun Wang, Tongchun Zhao, Liang Zhang