Patents by Inventor Der-Guang Chang

Der-Guang 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).

  • Method for producing mesoporpus nanoscale iron-containing metal particles
    Publication number: 20070044591
    Abstract: A method for producing mesoporous nanoscale iron-containing metal particles includes the steps of: adding dropwise a reducing agent into an iron salt containing aqueous solution under a condition that the molar ratio of the reducing agent to the iron salt ranges from 6 to 10 times the stoichiometric ratio of the reducing agent to the iron salt to produce mesoporous nanoscale iron-containing metal particles; separating the mesoporous nanoscale iron-containing metal particles from the aqueous solution; and drying the mesoporous nanoscale iron-containing metal particles.
    Type: Application
    Filed: April 19, 2006
    Publication date: March 1, 2007
    Inventors: Gordon Yang, Chih-Hsiung Hung, Der-Guang Chang