Patents by Inventor Sheung Man AU

Sheung Man AU 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 of ultra-large graphene oxide sheets
    Patent number: 9452934
    Abstract: Ultra-large graphene oxide (UL-GO) sheets are formed using a Langmuir-Blodgett (LB) thin film process. Sulfuric acid and nitric acid are applied to interlayers of natural graphite flake to form graphite intercalation compound (GIC) powders. The GIC powders are expanded at a high temperature, and intercalating agents are used to further oxidize the expanded GIC powders by to exfoliating the EG into monolayer graphene oxide (GO) sheets. The GO is sequentially centrifuged and UL-GO sheets are collected. An LB thin film is prepared from the collected sheets and the thin films are reduced and chemically doped.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: September 27, 2016
    Assignee: THE HONG KONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
    Inventors: Jang Kyo Kim, Jingjing Jia, Xiuyi Lin, Chak Ming Kan, Sheung Man Au
  • Synthesis of Ultra-Large Graphene Oxide Sheets
    Publication number: 20150071844
    Abstract: Ultra-large graphene oxide (UL-GO) sheets are formed using a Langmuir-Blodgett (LB) thin film process. Sulfuric acid and nitric acid are applied to interlayers of natural graphite flake to form graphite intercalation compound (GIC) powders. The GIC powders are expanded at a high temperature, and intercalating agents are used to further oxidize the expanded GIC powders by to exfoliating the EG into monolayer graphene oxide (GO) sheets. The GO is sequentially centrifuged and UL-GO sheets are collected. An LB thin film is prepared from the collected sheets and the thin films are reduced and chemically doped.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 12, 2015
    Inventors: Jang Kyo KIM, Jingjing JIA, Xiuyi LIN, Chak Ming KAN, Sheung Man AU