Patents by Inventor Siu Choon Ng

Siu Choon Ng 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 forming a particulate porous metal oxide or metalloid oxide
    Patent number: 10464811
    Abstract: The present invention relates to a method of forming a particulate porous metal oxide or metalloid oxide, as well as uses of the obtained a particulate porous metal oxide or metalloid oxide. A solution of a non-ionic surfactant and either an ionic surfactant or an inorganic salt is formed in an acidic aqueous solution. A metal oxide precursor or a metalloid oxide precursor is added. The formed reaction mixture is heated under reflux upon agitation for a period sufficient to obtain a particulate porous metal oxide or metalloid oxide.
    Type: Grant
    Filed: April 5, 2010
    Date of Patent: November 5, 2019
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Yanhui Yang, Siu-Choon Ng, Xianbin Liu, Laisheng Li, Yu Du
  • Thienothiophene derivatives
    Patent number: 8329915
    Abstract: An organic compound represented by the following general formula (I) and characterized by the conjugation of thieno[3,2-b]thiophene, thiophene and phenylene units in the conjugated compound.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: December 11, 2012
    Assignees: Nanyang Technological University, Agency for Science, Technology and Research
    Inventors: Omer E. Ahmed Moawia, Ashok Mishra, Andrew Grimsdale, Siu Choon Ng, Subodh G. Mhaisalkar, Beng Ong, Zhikuan Chen
  • THIENOTHIOPHENE DERIVATIVES
    Publication number: 20100331550
    Abstract: An organic compound represented by the following general formula (I) and characterised by the conjugation of thieno[3,2-b]thiophene, thiophene and phenylene units in the conjugated compound.
    Type: Application
    Filed: February 19, 2009
    Publication date: December 30, 2010
    Applicants: NANYANG TECHNOLOGICAL UNIVERSITY, AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Omer E. Ahmed Moawia, Ashok Mishra, Andrew Grimsdale, Siu Choon Ng, Subodh G. Mhaisalkar, Beng Ong, Zhikuan Chen
  • METHOD OF FORMING A PARTICULATE POROUS METAL OXIDE OR METALLOID OXIDE
    Publication number: 20100254890
    Abstract: The present invention relates to a method of forming a particulate porous metal oxide or metalloid oxide, as well as uses of the obtained a particulate porous metal oxide or metalloid oxide. A solution of a non-ionic surfactant and either an ionic surfactant or an inorganic salt is formed in an acidic aqueous solution. A metal oxide precursor or a metalloid oxide precursor is added. The formed reaction mixture is heated under reflux upon agitation for a period sufficient to obtain a particulate porous metal oxide or metalloid oxide.
    Type: Application
    Filed: April 5, 2010
    Publication date: October 7, 2010
    Applicant: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Yanhui Yang, Siu-Choon Ng, Xianbin Liu, Laisheng Li, Yu Du
  • Saccharide and support for chromatography
    Patent number: 7208086
    Abstract: A novel conjugate of a support material and an oligomer or polymer of a saccharide that is linked to the support material via urea linkages, and in which the oligomers or polymers are cross-linked via urea linkages provides a valuable stationary phase for chromatography. It is particularly valuable as a chiral stationary phase in enantiomeric separations and enantiomeric analysis.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: April 24, 2007
    Assignee: National University of Singapore
    Inventors: Siu Choon Ng, Chi Bun Ching, Lifeng Zhang, Lei Chen
  • Poly(arylene ether) dielectrics
    Patent number: 7179879
    Abstract: The present invention relates to poly(arylene ethers) used as low k dielectric layers in electronic applications and articles containing such poly(arylene ethers) comprising the structure: wherein n=5 to 10000 and monovalent Ar1 and divalent Ar2 are selected from a group of heteroaromatic compounds that incorporate O, N, Se, S, or Te or combinations of the aforesaid elements, including but not limited to:
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: February 20, 2007
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Christopher Lim, Siu Choon Ng, Hardy Chan, Simon Chooi, Mei Sheng Zhou
  • Poly(arylene ether) dielectrics
    Patent number: 7166250
    Abstract: The present invention relates to poly(arylene ethers) used as low k dielectric layers in electronic applications and articles containing such poly(arylene ethers) comprising the structure: wherein n=5 to 10000 and monovalent Ar1 and divalent Ar2 are selected from a group of heteroaromatic compounds that incorporate O, N, Se, S, or Te or combinations of the aforesaid elements, including but not limited to:
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: January 23, 2007
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Christopher Lim, Siu Choon Ng, Hardy Chan, Simon Chooi, Mei Sheng Zhou
  • Poly(arylene ether) dielectrics
    Patent number: 7071281
    Abstract: The present invention relates to poly(arylene ethers) used as low k dielectric layers in electronic applications and articles containing such poly(arylene ethers) comprising the structure: wherein n=5 to 10000 and monovalent Ar1 and divalent Ar2 are selected from a group of heteroaromatic compounds that incorporate O, N, Se, S, or Te or combinations of the aforesaid elements, including but not limited to:
    Type: Grant
    Filed: January 4, 2005
    Date of Patent: July 4, 2006
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Christopher Lim, Siu Choon Ng, Hardy Chan, Simon Chooi, Mei Sheng Zhou
  • Poly(arylene ether) dielectrics
    Patent number: 6846899
    Abstract: The present invention relates to poly(arylene ethers) used as low k dielectric layers in electronic applications and articles containing such poly(arylene ethers) comprising the structure: wherein n=5 to 10000 and monovalent Ar1 and divalent Ar2 are selected from a group of heteroaromatic compounds that incorporate O, N, Se, S, or Te or combinations of the aforesaid elements, including but not limited to:
    Type: Grant
    Filed: October 1, 2002
    Date of Patent: January 25, 2005
    Assignee: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Christopher Lim, Siu Choon Ng, Hardy Chan, Simon Chooi, Mei Sheng Zhou
  • Materials comprising saccharide cross-linked and chemically bonded to a support via urea linkages useful for chromatography and electrophoresis applications
    Publication number: 20040154987
    Abstract: A novel conjugate of a support material and an oligomer or polymer of a saccharide that is linked to the support material via urea linkages, and in which the oligomers or polymers are cross-linked via urea linkages provides a valuable stationary phase for chromatography. It is particularly valuable as a chiral stationary phase in enantiomeric separations and enantiomeric analysis.
    Type: Application
    Filed: February 4, 2004
    Publication date: August 12, 2004
    Applicant: National University of Singapore
    Inventors: Siu Choon Ng, Chi Bun Ching, Lifeng Zhang, Lei Chen
  • Materials comprising polymers or oligomers of saccharides chemically bonded to a support useful for chromatography and electrophoresis applications
    Publication number: 20040129640
    Abstract: A novel conjugate comprising a support material and an oligomer or polymer of a saccharide, in which the oligomer or polymer is linked to the support material via one or more ether, carbamate, ester, or imino linkages between the saccharide and the support material, and in which the saccharide is fully functionalized, provides a valuable stationary phase for chromatography. It is particularly valuable as a chiral stationary phase in enantiomeric separations and enantiomeric analysis.
    Type: Application
    Filed: January 18, 2002
    Publication date: July 8, 2004
    Applicant: National University of Singapore
    Inventors: Siu Choon Ng, Chi Bun Ching, Li Feng Zhang, Lei Chen
  • Materials comprising saccharide cross-linked and chemically bonded to a support via urea linkages
    Patent number: 6720285
    Abstract: A conjugate of a support material and an oligomer or polymer of a saccharide that is linked to the support material via urea linkages, and in which the oligomers or polymers are cross-linked via urea linkages provides a valuable stationary phase for chromatography. It is particularly valuable as a chiral stationary phase in enantiomeric separations and enantiomeric analysis.
    Type: Grant
    Filed: June 22, 2001
    Date of Patent: April 13, 2004
    Assignee: National University of Singapore
    Inventors: Siu Choon Ng, Chi Bun Ching, Lifeng Zhang, Lei Chen
  • Novel poly(arylene ether) dielectrics
    Publication number: 20040068082
    Abstract: The present invention relates to poly(arylene ethers) used as low k dielectric layers in electronic applications and articles containing such poly(arylene ethers) comprising the structure: 1
    Type: Application
    Filed: October 1, 2002
    Publication date: April 8, 2004
    Applicant: Chartered Semiconductor Manufacturing Ltd.
    Inventors: Christopher Lim, Siu Choon Ng, Hardy Chan, Simon Chooi, Mei Sheng Zhou
  • Materials comprising polymers or oligomers of saccharides chemically bonded to a support useful for chromatography and electrophoresis applications
    Publication number: 20030159992
    Abstract: A novel conjugate comprising a support material and an oligomer or polymer of a saccharide, in which the oligomer or polymer is linked to the support material via one or more ether, carbamate, ester, or imino linkages between the saccharide and the support material, and in which the saccharide is fully functionalized, provides a valuable stationary phase for chromatography. It is particularly valuable as a chiral stationary phase in enantiomeric separations and enantiomeric analysis.
    Type: Application
    Filed: January 18, 2002
    Publication date: August 28, 2003
    Applicant: National University of Singapore
    Inventors: Siu Choon Ng, Chi Bun Ching, Li Feng Zhang, Lei Chen
  • Materials comprising saccharide cross-linked and chemically bonded to a support via urea linkages useful for chromatography and electrophoresis applications
    Publication number: 20020058588
    Abstract: A novel conjugate of a support material and an oligomer or polymer of a saccharide that is linked to the support material via urea linkages, and in which the oligomers or polymers are cross-linked via urea linkages provides a valuable stationary phase for chromatography. It is particularly valuable as a chiral stationary phase in enantiomeric separations and enantiomeric analysis.
    Type: Application
    Filed: June 22, 2001
    Publication date: May 16, 2002
    Applicant: National University of Singapore
    Inventors: Siu Choon Ng, Chi Bun Ching, Lifeng Zhang, Lei Chen
  • Separating materials for chromatography and electrophoresis applications comprising regiodefined functionalised cyclodextrins chemically bonded to a support via urethane functionalities
    Patent number: 6296768
    Abstract: Novel and improved chiral stationary phases (CSP) materials comprising a support and completely regiodefined derivitised cyclodextrin chemically bonded via single or double urethane linkage(s) universally applicable in HPLC, LC, TLC, and CCE are obtained using a process based on the almost quantitative reaction of pre-synthesized regiodefined per-functionalized mono- or di- azidocyclodextrin with primary amines.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: October 2, 2001
    Assignee: National University of Singapore
    Inventors: Siu Choon Ng, Lifong Zhang, Chi Bun Ching
  • Separating materials for chromatography and electrophoresis applications comprising regiodefined functionalised cyclodextrins chemically bonded to a support via urethane functionalities
    Patent number: 6017458
    Abstract: Novel and improved chiral stationary phases (CSP) materials comprising a support and completely regiodefined derivitized cyclodextrin chemically bonded via single or double urethane linkage(s) universally applicable in HPLC, LC, TLC, and CCE are obtained using a process based on the almost quantitative reaction of pre-synthesized regiodefined per-functionalized mono- or di- azidocyclodextrin with primary amines.
    Type: Grant
    Filed: August 26, 1998
    Date of Patent: January 25, 2000
    Assignee: National University of Singapore
    Inventors: Siu Choon Ng, Lifeng Zhang, Chi Bun Ching
  • 2-(benzyl)-3-arylbenzofurans as antitumour and hypocholesterolemic agents
    Patent number: 5459139
    Abstract: The synthesis and the biological evaluation of a series of basic ethers of 2-benzyl-3-arylbenzofurans as antitumor agents is described. These compounds bind significantly to the antiestrogen-binding sites but only poorly to the estrogen receptor sites and are cytotoxic to tumor cells. Some of these compounds also significantly inhibited de novo cholesterol biosynthesis in an estrogen receptor negative lymphoma cell line rich in antiestrogen-binding sites.
    Type: Grant
    Filed: June 1, 1994
    Date of Patent: October 17, 1995
    Assignee: National University of Singapore
    Inventors: Keng-Yeow Sim, Oi-Lian Kon, Chin-Chin Teo, Siu-Choon Ng, Srikanth Natarajan
  • 2-(benzyl)-3-arylbenzofurans as antitumour and hypocholesterolemic agents
    Patent number: 5354861
    Abstract: The synthesis and the biological evaluation of a series of basic ethers of 2-benzyl-3-arylbenzofurans as antitumor agents is described. These compounds bind significantly to the antiestrogen-binding sites but only poorly to the estrogen receptor sites and are cytotoxic to tumor cells. Some of these compounds also significantly inhibited de novo cholesterol biosynthesis in an estrogen receptor negative lymphoma cell line rich in antiestrogen-binding sites.
    Type: Grant
    Filed: November 4, 1992
    Date of Patent: October 11, 1994
    Assignee: National University of Singapore
    Inventors: Keng-Yeow Sim, Oi-Lian Kon, Chin-Chin Teo, Siu-Choon Ng, Srikanth Natarajan