Patents by Inventor Kam Shing Philip Siu

Kam Shing Philip Siu 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).

  • Process for producing mesophase pitch by hydrogenation of high-temperature coal tar
    Patent number: 9994775
    Abstract: A process for producing mesophase pitch from high-temperature coal tar comprises: removing salts and quinoline insoluble fraction from a high-temperature coal tar to obtain a decant oil; using the decant oil as a hydrogenation feedstock, or pre-distilling the decant oil to obtain a residue with a boiling point higher than 230 and formulating the residue into a hydrogenation feedstock; catalytic hydrorefining the hydrogenation feedstock to obtain a hydrofined oil; distilling the hydrofined oil to obtain hydrogenated pitch; and subjecting the hydrogenated pitch to the thermal polymerization to obtain the mesophase pitch. The process has features such as an easily controllable degree of hydrogenation, complete removal of impurities, good raw material flowability, not tending to form the carbon deposition and the coking during the process, and not tending to jam the reactor. The product has a high content of mesophase pitch, a low softening point and a low impurity content.
    Type: Grant
    Filed: April 6, 2012
    Date of Patent: June 12, 2018
    Assignees: ECO ENVIRONMENTAL ENERGY RESEARCH INSTITUTE LIMITED, DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Hongmei Zhao, Jieshan Qiu, Kam Shing Philip Siu, Baoming Li, Junde Steve Lu, Nan Xiao
  • Process for Producing Mesophase Pitch by Hydrogenation of High-temperature Coal Tar
    Publication number: 20150076031
    Abstract: A process for producing mesophase pitch from high-temperature coal tar comprises: removing salts and quinoline insoluble fraction from a high-temperature coal tar to obtain a decant oil; using the decant oil as a hydrogenation feedstock, or pre-distilling the decant oil to obtain a residue with a boiling point higher than 230 and formulating the residue into a hydrogenation feedstock; catalytic hydrorefining the hydrogenation feedstock to obtain a hydrofined oil; distilling the hydrofined oil to obtain hydrogenated pitch; and subjecting the hydrogenated pitch to the thermal polymerization to obtain the mesophase pitch. The process has features such as an easily controllable degree of hydrogenation, complete removal of impurities, good raw material flowability, not tending to form the carbon deposition and the coking during the process, and not tending to jam the reactor. The product has a high content of mesophase pitch, a low softening point and a low impurity content.
    Type: Application
    Filed: April 6, 2012
    Publication date: March 19, 2015
    Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Hongmei Zhao, Jieshan Qiu, Kam Shing Philip Siu, Baoming Li, Junde Steve Lu, Nan Xiao