Patents by Inventor You-Liang Tu

You-Liang Tu 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: 10766841
    Abstract: A method of preparing bio-polyols from epoxidized fatty acid esters, wherein the bio-polyols are synthesized via hydroxylation with epoxidized fatty acid esters and ring-opening reagent, using the acidic ionic liquids as catalysts. The bio-polyols are used to synthesize bio-polyurethane and bio-polyurethane foams. The acidic ionic liquids in this process is used in esterification, epoxidation, and ring-opening reaction to synthesize bio-polyols. The ionic liquids catalysts have several advantages such as easy to separate, reusable, and may reduce pollution.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: September 8, 2020
    Assignee: CPC Corporation
    Inventors: You-Liang Tu, Ya-Shiuan Lin, Ming-Tsang Tsai, Chiu-Ping Li
  • Publication number: 20200148614
    Abstract: A method of preparing bio-polyols from epoxidized fatty acid esters, wherein the bio-polyols are synthesized via hydroxylation with epoxidized fatty acid esters and ring-opening reagent, using the acidic ionic liquids as catalysts. The bio-polyols are used to synthesize bio-polyurethane and bio-polyurethane foams. The acidic ionic liquids in this process is used in esterification, epoxidation, and ring-opening reaction to synthesize bio-polyols. The ionic liquids catalysts have several advantages such as easy to separate, reusable, and may reduce pollution.
    Type: Application
    Filed: October 24, 2019
    Publication date: May 14, 2020
    Inventors: You-Liang Tu, Ya-Shiuan Lin, Ming-Tsang Tsai, Chiu-Ping Li
  • Publication number: 20190287852
    Abstract: The current disclosure provides a semiconductor fabrication method that defines the height of gate structures at the formation of the gate structure. A gate line-end region is formed by removing a portion of a gate structure. A resulted recess is filled with a dielectric material is chosen to have a material property suitable for a later contact formation process of forming a metal contact. A metal contact structure is formed through the recess filling dielectric layer to connect to a gate structure and/or a source/drain region.
    Type: Application
    Filed: March 15, 2018
    Publication date: September 19, 2019
    Inventors: Che-Liang Chung, Che-Hao Tu, KEI-WEI CHEN, Chih-Wen Liu, You-Shiang Lin, Yi-Ching Liang
  • Patent number: 10093636
    Abstract: Synthesizing bio-plasticizers with acidic ionic liquids as catalysts. The acidic ionic liquids are Bronsted acidic ionic liquids, which are composed of alkyl sulfone pyridinium and strong Bronsted acid. Epoxidized fatty acid alkyl esters could be obtained via epoxidation of fatty acid alkyl esters using the acidic ionic liquids as catalysts. The epoxidized fatty acid alkyl esters perform well as bio-plasticizers, which could be substituted for phthalate ester plasticizers. The acidic ionic liquids catalysts provide good catalytic performance, are easy to separate, reusable, and may reduce corrosion of pipelines.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: October 9, 2018
    Assignee: CPC CORPORATION, TAIWAN
    Inventors: You-Liang Tu, Ya-Shiuan Lin, Ming-Tsang Tsai, Chiu-Ping Li, Jung-Chung Wu
  • Publication number: 20180037561
    Abstract: Synthesizing bio-plasticizers with acidic ionic liquids as catalysts. The acidic ionic liquids are Bronsted acidic ionic liquids, which are composed of alkyl sulfone pyridinium and strong Bronsted acid. Epoxidized fatty acid alkyl esters could be obtained via epoxidation of fatty acid alkyl esters using the acidic ionic liquids as catalysts. The epoxidized fatty acid alkyl esters perform well as bio-plasticizers, which could be substituted for phthalate ester plasticizers. The acidic ionic liquids catalysts provide good catalytic performance, are easy to separate, reusable, and may reduce corrosion of pipelines.
    Type: Application
    Filed: August 5, 2016
    Publication date: February 8, 2018
    Inventors: You-Liang Tu, Ya-Shiuan Lin, Ming-Tsang Tsai, Chiu-Ping Li, Jung-Chung Wu