Patents by Inventor Yun-Min Chang

Yun-Min Chang 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).

  • Synthesis for catalysis of bifunctional perovskite compound
    Patent number: 7955529
    Abstract: This invention discloses the synthesis of a bifunctional La0.6Ca0.4Co1-xIrxO3 (x=0˜1) perovskite compound with a superb bifunctional catalytic ability for the oxygen reduction and generation in alkaline electrolytes. Synthetic routes demonstrated include solid state reaction, amorphous citrate precursor, and mechanical alloying. The interested compound demonstrates notable enhancements over commercially available La0.6Ca0.4CoO3.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: June 7, 2011
    Assignee: National Chiao Tung University
    Inventors: Pu-Wei Wu, Yun-Min Chang
  • Synthesis for catelysis of bifunctional perovskite compound
    Publication number: 20100140569
    Abstract: This invention discloses the synthesis of a bifunctional La0.6Ca0.4Co1-xIrxO3 (x=0˜1) perovskite compound with a superb bifunctional catalytic ability for the oxygen reduction and generation in alkaline electrolytes. Synthetic routes demonstrated include solid state reaction, amorphous citrate precursor, and mechanical alloying. The interested compound demonstrates notable enhancements over commercially available La0.6Ca0.4CoO3.
    Type: Application
    Filed: May 6, 2009
    Publication date: June 10, 2010
    Applicant: National Chiao Tung University
    Inventors: Pu-Wei Wu, Yun-Min Chang
  • Liquid crystal composite
    Patent number: 7625498
    Abstract: The invention provides liquid crystal composites including a liquid crystal with a layered inorganic material and a photosensitive polymer dispersed therein. The layered inorganic layer reduces threshold voltage and enhances grating diffraction efficiency of the liquid crystal. The invention also provides a liquid crystal with a layered inorganic material dispersed in the liquid crystal, and a modified layered material MgAl—K2 LDH.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: December 1, 2009
    Assignee: Chung Yuan Christian University
    Inventors: Tsung-Yen Tsai, Yuan-Pin Huang, Shau-Wen Lu, Yun-Min Chang
  • Liquid crystal composite
    Publication number: 20070045588
    Abstract: The invention provides liquid crystal composites including a liquid crystal with a layered inorganic material and a photosensitive polymer dispersed therein. The layered inorganic layer reduces threshold voltage and enhances grating diffraction efficiency of the liquid crystal. The invention also provides a liquid crystal with a layered inorganic material dispersed in the liquid crystal, and a modified layered material MgAl—K2 LDH.
    Type: Application
    Filed: August 25, 2006
    Publication date: March 1, 2007
    Inventors: Tsung-Yen Tsai, Yuan-Pin Huang, Shau-Wen Lu, Yun-Min Chang