Patents by Inventor Liangyu Yan

Liangyu Yan 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).

  • Quinone radicals for enriching specific species of carbon nanotubes
    Patent number: 9475701
    Abstract: The present invention is directed to a method for enriching specific species of carbon nanotubes, comprising contacting a composition of carbon nanotubes with one or more quinone compounds, reacting the carbon nanotubes with the quinone compounds, and separating the carbon nanotubes reacted with the quinone compounds from the unreacted carbon nanotubes. The present invention is also directed to a field-effect transistor comprising a semiconducting single-walled carbon nanotube enriched using a method described herein.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: October 25, 2016
    Assignee: Nanyang Technological University
    Inventors: Bee Eng Mary Chan, Zhi Dai, Yu Qian Tina Tan, Liangyu Yan
  • Method for dispersing carbon nanotubes using chondroitin sulfate cation salt
    Patent number: 9082984
    Abstract: The present invention relates to a method for dispersing carbon nanotubes. The method may include contacting the carbon nanotubes with a solution containing chondroitin sulfate cation salt of formula (I) wherein R1 is MSO3 and R2 is H, or R1 is H and R2 is MSO3; M is an alkaline metal, or an alkaline earth metal further bound to a monovalent counter-anion; n is at least 20.
    Type: Grant
    Filed: June 10, 2013
    Date of Patent: July 14, 2015
    Assignee: NANYANG TECHNOLOGICAL UNIVERSITY
    Inventors: Bee Eng Mary Chan, Liangyu Yan
  • METHOD FOR DISPERSING CARBON NANOTUBES USING CHONDROITIN SULFATE CATION SALT
    Publication number: 20130341570
    Abstract: The present invention relates to a method for dispersing carbon nanotubes. The method may include contacting the carbon nanotubes with a solution containing chondroitin sulfate cation salt of formula (I) wherein R1 is MSO3 and R2 is H, or R1 is H and R2 is MSO3; M is an alkaline metal, or an alkaline earth metal further bound to a monovalent counter-anion; n is at least 20.
    Type: Application
    Filed: June 10, 2013
    Publication date: December 26, 2013
    Inventors: Bee Eng Mary Chan, Liangyu Yan
  • QUINONE RADICALS FOR ENRICHING SPECIFIC SPECIES OF CARBON NANOTUBES
    Publication number: 20130336874
    Abstract: The present invention is directed to a method for enriching specific species of carbon nanotubes, comprising contacting a composition of carbon nanotubes with one or more quinone compounds, reacting the carbon nanotubes with the quinone compounds, and separating the carbon nanotubes reacted with the quinone compounds from the unreacted carbon nanotubes. The present invention is also directed to a field-effect transistor comprising a semiconducting single-walled carbon nanotube enriched using a method described herein.
    Type: Application
    Filed: May 14, 2013
    Publication date: December 19, 2013
    Inventors: Bee Eng Mary Chan, Zhi Dai, Yu Qian Tina Tan, Liangyu Yan