Patents by Inventor Chengde Liu

Chengde Liu 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).

  • Publication number: 20210047466
    Abstract: The present invention relates to the technical field of polymer science, and disclosed thereby is a bio-based polyarylene ether resin containing a furan ring structure and a preparation method thereof. A bio-based monomer containing a furan ring structure furan-2,5-bis(4-fluorophenyl)methanone (BFBF), which is inventively prepared by using a bio-based derivative furan dicarboxylic acid (FDAC), undergoes a nucleophilic substitution reaction with one or more from a dihydric phenol monomer and a dihalobenzophenone monomer to prepare a bio-based homopolymerized or copolymerized polyaryletherketone resin containing a furan ring structure. The introduction of a bio-base into the field of special engineering plastics diversifies the types of polyaryletherketone resins, while also effectively responding to an oil crisis.
    Type: Application
    Filed: February 5, 2018
    Publication date: February 18, 2021
    Applicant: DALIAN UNIVERSITY OF TECHNOLOGY
    Inventors: Jinyan Wang, Xigao Jian, Cheng Liu, Chengde Liu, Shouhai Zhang, Zhihuan Weng, Fangyuan Hu
  • Publication number: 20140170224
    Abstract: A gelatin-based microgel was prepared by a simple method starting from gelatin and alginate. The microgel was composed of a soft gelatin-based core coated by a permeable membrane. Gelatin-based core was moderately crosslinked by a novel crosslinker 4-arm PEG succinimidyl glutarate (pentaerytheritol core) (sPEG-4A-GS(10 k)).
    Type: Application
    Filed: December 11, 2013
    Publication date: June 19, 2014
    Applicant: Agency for Science, Technology and Research
    Inventors: Jun Li, Zhongxing Zhang, Chengde Liu