Patents by Inventor Chan Hung Shek

Chan Hung Shek 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 of fabricating nanoporous metal structure
    Patent number: 10612152
    Abstract: A method of fabricating a nanoporous metal structure, such as a nanoporous metal (NMP) supported Pd catalyst suitable for use in a direct methanol fuel cell (DMFC), is includes the steps of (a) providing a piece of Au55Cu25Si20 alloy glass ribbon with a thickness of 50 ?m, (b) dealloying the piece of alloy glass ribbon by reacting with iron (III) chloride solution to form a free-standing NPM ribbon, (c) depositing a thin film of PdCo of a thickness of 100 nm on the NPM ribbon by RF magnetron sputtering with Pd0.5Co0.5 (atomic percent) as target in an argon atmosphere, and (d) electrochemically dissolving some of the Co on the thin film of PdCo to induce migration of Au from the NPM ribbon to the thin layer of PdCo.
    Type: Grant
    Filed: November 18, 2016
    Date of Patent: April 7, 2020
    Assignee: CITY UNIVERSITY OF HONG KONG
    Inventors: Yi Xu, Pak Man Yiu, Chan Hung Shek
  • METHOD OF FABRICATING NANOPOROUS METAL STRUCTURE
    Publication number: 20180145339
    Abstract: A method of fabricating a nanoporous metal structure, such as a nanoporous metal (NMP) supported Pd catalyst suitable for use in a direct methanol fuel cell (DMFC), is includes the steps of (a) providing a piece of Au55Cu25Si20 alloy glass ribbon with a thickness of 50 ?m, (b) dealloying the piece of alloy glass ribbon by reacting with iron (III) chloride solution to form a free-standing NPM ribbon, (c) depositing a thin film of PdCo of a thickness of 100 nm on the NPM ribbon by RF magnetron sputtering with Pd0.5Co0.5 (atomic percent) as target in an argon atmosphere, and (d) electrochemically dissolving some of the Co on the thin film of PdCo to induce migration of Au from the NPM ribbon to the thin layer of PdCo.
    Type: Application
    Filed: November 18, 2016
    Publication date: May 24, 2018
    Inventors: Yi Xu, Pak Man Yiu, Chan Hung Shek
  • METHOD AND APPARATUS FOR PRODUCING A LIGHTWEIGHT METAL ALLOY
    Publication number: 20110103994
    Abstract: A method of forming a metal alloy from a powder composition comprising first particles in a range of approximately 20-90% by weight of the powder composition, the remainder of the powder composition comprising approximately 95% by weight of second particles and 5% by weight of third particles, wherein the method includes the step of using rapid thermal processing (RTP) to sinter the powder composition.
    Type: Application
    Filed: August 9, 2010
    Publication date: May 5, 2011
    Applicant: Automotive Parts and Accessory Systems R&D Centre Limited
    Inventors: June-Sang SIAK, Chan Hung Shek, Chi Yuen Chung, Wai-Lam Ralph Ip, Tik Lam Cheung