Patents by Inventor Yi-Yan Yang

Yi-Yan Yang 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).

  • Patent number: 11485823
    Abstract: The present invention mainly relates to a polymer for delivery of biologically active materials, a complex and a method of synthesis thereof. The polymer comprises a poly(ethylene imine) and at least one monomer, each monomer comprising a modified sugar moiety, preferably galactose, comprising a sulphur atom or a nitrogen atom and a chemical moiety comprising a terminal epoxide for linking the polyethylene imine to the monomer, wherein the sulphur atom or the nitrogen atom links the modified sugar moiety to the chemical moiety. The biologically active material is preferably a gene, siRNA, mRNA or plasmid DNA. Further disclosed is the medical use of said complex in treating a disease caused by a genetic disorder, for example cancer.
    Type: Grant
    Filed: May 23, 2018
    Date of Patent: November 1, 2022
    Assignee: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Chuan Yang, Wei Cheng, Ashlynn Lee
  • Publication number: 20220062450
    Abstract: A portable heating sterilization bag for face mask and cloth products includes a bag container. The bag is capable of holding and containing face masks. At least one of heating plate installed on one inner surface in the bag and being made of god conductor material of heat; a heat source is for heating the at least one heating plate; the heat source is attached to the at least one heating plate and serving to control the internal temperature of the bag. If the power switch is turned on, the heat plate heats the contained face mask or cloth product to produce the effect of face mask or cloth product disinfect and sterilization. The heating plate is made of metal or non-metal material and it can be rigid or flexible.
    Type: Application
    Filed: August 31, 2020
    Publication date: March 3, 2022
    Inventors: Li Chieh Cheng, Yi-Yan Yang
  • Publication number: 20200165390
    Abstract: The present invention mainly relates to a polymer for delivery of biologically active materials, a complex and a method of synthesis thereof. The polymer comprises a poly(ethylene imine) and at least one monomer, each monomer comprising a modified sugar moiety, preferably galactose, comprising a sulphur atom or a nitrogen atom and a chemical moiety comprising a terminal epoxide for linking the polyethylene imine to the monomer, wherein the sulphur atom or the nitrogen atom links the modified sugar moiety to the chemical moiety. The biologically active material is preferably a gene, siRNA, mRNA or plasmid DNA. Further disclosed is the medical use of said complex in treating a disease caused by a genetic disorder, for example cancer.
    Type: Application
    Filed: May 23, 2018
    Publication date: May 28, 2020
    Applicant: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Chuan Yang, Wei Cheng, Ashlynn Lee
  • Patent number: 9273096
    Abstract: Disclosed are amphiphilic peptides. Also disclosed are methods of treating proliferative disease, bacterial infection, viral infection and fungal infection, endotoxin neutralization and a method of removing biofilm. Also disclosed is the use of the amphiphilic peptides.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: March 1, 2016
    Assignee: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Zhan Yuin Ong
  • Patent number: 9234004
    Abstract: The present invention relates to antimicrobial peptides, to their use as antimicrobial agents and to their use in the treatment of (infectious) diseases, in particular infectious diseases caused by Gram-positive bacteria, Gram-negative bacteria, yeast or fungi. The present invention further relates to pharmaceutical compositions and kits comprising the antimicrobial peptides and to a method of lysing bacterial, yeast or fungal cells. The antimicrobial peptides consist of one of the following general formula: Wherein X is a hydrophobic amino acid, Y is a cationic amino acid, Z is an amino acid having a free thiol or thioether group, n is 2-4 and m is 0 or 1.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: January 12, 2016
    Assignee: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Nikken Wiradharma, Charlotte A. E. Hauser
  • Patent number: 9221875
    Abstract: Disclosed is the method of treating keratits in a subject thereof comprising administering into the subject an amphiphilic peptides of the present disclosure. Also disclosed are methods of removing biofilm from cornea.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: December 29, 2015
    Assignee: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Zhan Yuin Ong
  • Publication number: 20150080289
    Abstract: Disclosed are amphiphilic peptides. Also disclosed are methods of treating proliferative disease, bacterial infection, viral infection and fungal infection, endotoxin neutralization and a method of removing biofilm. Also disclosed is the use of the amphiphilic peptides.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 19, 2015
    Inventors: Yi-Yan Yang, Zhan Yuin Ong
  • Publication number: 20150005228
    Abstract: Disclosed is the method of treating keratits in a subject thereof comprising administering into the subject an amphiphilic peptides of the present disclosure. Also disclosed are methods of removing biofilm from cornea.
    Type: Application
    Filed: July 1, 2014
    Publication date: January 1, 2015
    Inventors: Yi-Yan Yang, Zhan Yuin Ong
  • Patent number: 8821859
    Abstract: Articles and methods for the delivery of drugs and/or nucleic acids. Articles including a nanoparticle are provided that may be used for the delivery of a drug, a nucleic acid, or both, to a subject. The articles may be of polymeric material and may self-assemble.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: September 2, 2014
    Assignee: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Yong Wang, Cherng-wen Tan, Jackie Y. Ying
  • Publication number: 20130225481
    Abstract: The present invention relates to antimicrobial peptides, to their use as antimicrobial agents and to their use in the treatment of (infectious) diseases, in particular infectious diseases caused by Gram-positive bacteria, Gram-negative bacteria, yeast or fungi. The present invention further relates to pharmaceutical compositions and kits comprising the antimicrobial peptides and to a method of lysing bacterial, yeast or fungal cells. The antimicrobial peptides consist of one of the following general formula: Wherein X is a hydrophobic amino acid, Y is a cationic amino acid, Z is an amino acid having a free thiol or thioether group, n is 2-4 and m is 0 or 1.
    Type: Application
    Filed: October 31, 2011
    Publication date: August 29, 2013
    Applicant: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Nikken Wiradharma, Charlotte A.E. Hauser
  • Patent number: 8512757
    Abstract: The invention provides a block copolymer comprising at least a first block and a second block. The first block comprises a plurality of temperature-sensitive monomeric units, a plurality of hydrophilic monomeric units and a plurality of targeting monomeric units, and the second block comprises a plurality of hydrophobic monomeric units. The second block comprises at least one pH-sensitive moiety.
    Type: Grant
    Filed: July 5, 2006
    Date of Patent: August 20, 2013
    Assignee: Agency for Science, Techology and Research
    Inventors: Yi-Yan Yang, Shao-Qiong Liu
  • Patent number: 8425900
    Abstract: There is presently provided a complex of a micelle formed from a cationic polymer and a protein, and a method using the complex to deliver the protein into a cell.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: April 23, 2013
    Assignee: Agency for Science, Technology and Research
    Inventors: Yi-Yan Yang, Yong Wang, Ashlynn Lingzhi Lee
  • Publication number: 20130078283
    Abstract: Disclosed herein is a compound of structure (A): In this compound, X is either O or S, R1 is a rigid group, R2 is a hydrophilic group such that (A) is capable of self-assembly in water, and R3 is an organic group.
    Type: Application
    Filed: January 6, 2011
    Publication date: March 28, 2013
    Inventors: Yi-Yan Yang, Shrinivas Venkataraman
  • Publication number: 20110223202
    Abstract: The invention discloses an amphiphilic antimicrobial substance comprising a hydrophobic portion coupled to a cationic oligopeptide portion. The cationic oligopeptide portion may comprise a protein transduction domain coupled to a cationic oligopeptide group.
    Type: Application
    Filed: December 18, 2008
    Publication date: September 15, 2011
    Inventors: Yi-Yan Yang, Lihong Liu
  • Publication number: 20100286069
    Abstract: There is presently provided a triblock peptide comprising a hydrophobic amino acid block, a histidine block and a cationic amino acid block. The triblock peptide may be used to form a nanoparticle for delivery of an agent into a cell.
    Type: Application
    Filed: June 27, 2008
    Publication date: November 11, 2010
    Inventors: Yi-Yan Yang, Nikken Wiradharma, Weiyang Seow
  • Publication number: 20100159019
    Abstract: The invention provides a block copolymer comprising at least a first block and a second block. The first block comprises a plurality of temperature-sensitive monomeric units, a plurality of hydrophilic monomeric units and a plurality of targeting monomeric units, and the second block comprises a plurality of hydrophobic monomeric units. The second block comprises at least one pH-sensitive moiety.
    Type: Application
    Filed: July 5, 2006
    Publication date: June 24, 2010
    Inventors: Yi-Yan Yang, Shao-Qiong Liu
  • Publication number: 20100159508
    Abstract: The invention provides an amphiphilic copolymer comprising monomer units derived from a first monomer and monomer units derived from a second monomer. The copolymer has at least one hydrophobic endgroup. The first monomer is such that the copolymer is thermally responsive and the second monomer comprises a carboxylic acid or carboxylate group.
    Type: Application
    Filed: July 6, 2007
    Publication date: June 24, 2010
    Applicants: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH, NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Yi-Yan Yang, Wei Liu Hong, Chi-Bun Ching, Chen Hong
  • Publication number: 20100119501
    Abstract: There is presently provided a complex of a micelle formed from a cationic polymer and a protein, and a method using the complex to deliver the protein into a cell.
    Type: Application
    Filed: April 30, 2008
    Publication date: May 13, 2010
    Inventors: Yi-Yan Yang, Yong Wang, Ashlynn Lingzhi Lee
  • Publication number: 20080182959
    Abstract: The invention is directed to a copolymer comprising at least three types of monomeric units, said three types of monomeric units comprising: a temperature-sensitive unit, a hydrophilic unit, and a hydrophobic unit comprising at least one pH-sensitive moiety; wherein said hydrophobic monomeric unit is derived from a copolymerisable unsaturated fatty acid.
    Type: Application
    Filed: November 19, 2007
    Publication date: July 31, 2008
    Inventors: Yi-Yan Yang, Kumaresh Soppimath
  • Patent number: 7316816
    Abstract: The invention is directed to a copolymer comprising at least three types of monomeric units, said three types of monomeric units comprising: a temperature-sensitive unit, a hydrophilic unit, and a hydrophobic unit comprising at least one pH-sensitive moiety; wherein said hydrophobic monomeric unit is derived from a copolymerisable unsaturated fatty acid.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: January 8, 2008
    Assignee: Agency for Science Technology and Research
    Inventors: Yi-Yan Yang, Kumaresh Soppimath