Patents by Inventor Yiu Chung Cheng

Yiu Chung Cheng 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 preparing a sulphur cement product
    Patent number: 9017472
    Abstract: A process for the preparation of a sulphur cement product is disclosed. Sulphur is mixed with a coupling agent and with a particulate inorganic material at a temperature at which sulphur is molten to obtain a molten sulphur cement product, which is solidified. The coupling agent is supplied as a solid composition comprising the coupling agent and at least 10 wt %, based upon the weight of the solid composition, of carrier material selected from one or more of wax, inorganic filler and polymer. The coupling agent is chosen from the group of organosilanes and organotitanates.
    Type: Grant
    Filed: May 18, 2010
    Date of Patent: April 28, 2015
    Assignee: Shell Oil Company
    Inventors: Paul de Boer, Yiu Chung Cheng, Michael David Lankshear, Catherine Frances Smura, Guy Lode Magda Maria Verbist, Willem Posthumus
  • Reinforced sulphur concrete
    Patent number: 8753444
    Abstract: Reinforced sulphur concrete wherein one or more metal reinforcing members are in contact with sulphur concrete is disclosed. The reinforced sulphur concrete comprises an adhesion promoter that enhances the interaction between the sulphur and the one or more metal reinforcing members.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: June 17, 2014
    Assignee: Shell Oil Company
    Inventors: Juedu Austine, Yiu Chung Cheng, Michael David Lankshear, Cees Weijers
  • REINFORCED SULPHUR CONCRETE
    Publication number: 20130247795
    Abstract: Reinforced sulphur concrete wherein one or more metal reinforcing members are in contact with sulphur concrete is disclosed. The reinforced sulphur concrete comprises an adhesion promoter that enhances the interaction between the sulphur and the one or more metal reinforcing members.
    Type: Application
    Filed: October 26, 2011
    Publication date: September 26, 2013
    Inventors: Juedu Austine, Yiu Chung Cheng, Michael David Lankshear, Cees Weijers
  • PROCESS FOR PREPARING A SULPHUR CEMENT PRODUCT
    Publication number: 20120186493
    Abstract: A process for the preparation of a sulphur cement product is disclosed. Sulphur is mixed with a coupling agent and with a particulate inorganic material at a temperature at which sulphur is molten to obtain a molten sulphur cement product, which is solidified. The coupling agent is supplied as a solid composition comprising the coupling agent and at least 10 wt %, based upon the weight of the solid composition, of carrier material selected from one or more of wax, inorganic filler and polymer. The coupling agent is chosen from the group of organosilanes and organotitanates.
    Type: Application
    Filed: May 18, 2010
    Publication date: July 26, 2012
    Inventors: Paul de Boer, Yiu Chung Cheng, Michael David Lankshear, Catherine Frances Smura, Guy Lode Magda Maria Verbist, Willem Posthumus