Patents by Inventor Yanbing Bai

Yanbing Bai 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).

  • Process for synthesizing and purifying sucralose
    Patent number: 8283464
    Abstract: The present invention discloses a process for synthesizing sucralose, which comprises reacting sucrose with acetic anhydride in the solvent of a N-amide compound in the presence of an organic complex alkali metal salt catalyst to produce sucrose-6-acetate, and then chlorinating and deacetylating the sucrose-6-acetate to give sucralose. The present invention also discloses a process for purifying sucralose, which comprises purifying crude sucralose with one or more organic solvents to obtain purified sucralose.
    Type: Grant
    Filed: December 19, 2008
    Date of Patent: October 9, 2012
    Assignees: Zhejiang Hangzhou Xinfu Pharmaceutical, Co., Ltd., Shanghai Tongchen Biotech, Co., Ltd.
    Inventors: Xinmin Chen, Yanbing Bai, Jianxin Peng
  • PROCESS FOR SYNTHESIZING AND PURIFYING SUCRALOSE
    Publication number: 20100292462
    Abstract: The present invention discloses a process for synthesizing sucralose, which comprises reacting sucrose with acetic anhydride in the solvent of a N-amide compound in the presence of an organic complex alkali metal salt catalyst to produce sucrose-6-acetate, and then chlorinating and deacetylating the sucrose-6-acetate to give sucralose. The present invention also discloses a process for purifying sucralose, which comprises purifying crude sucralose with one or more organic solvents to obtain purified sucralose.
    Type: Application
    Filed: December 19, 2008
    Publication date: November 18, 2010
    Applicants: ZHEJIANG HANGZHOU XINFU PHARMACEUTICAL CO., LTD., SHANGHAI TONGCHEN BIOTECH CO., LTD.
    Inventors: Xinmin Chen, Yanbing Bai, Jianxin Peng
  • Method for the producing vanillic acid and vanillin from waste residue of rice bran oil by fermentation and biotransformation
    Patent number: 7462470
    Abstract: A method for the production of vanillic acid and vanillin from waste residue (niger) of rice bran oil by microbial fermentation and biotransformation is provided. The method of the present invention comprises the steps of hydrolization of ferulic acid esters in waste residue of rice bran oil to ferulic acid and further conversion into vanillic acid using microbial strain Aspergillus niger CGMCC 0774 screened and preserved by the present inventor, followed by conversion of vanillic acid to produce vanillin using another microbial strain Pycnoporus cinnabarinus CGMCC 1115. The method for the production of vanillin according to the present invention utilizes renewable source from rice processing and alleviates the environmental pollution caused by the chemical synthesis of vanillin.
    Type: Grant
    Filed: January 27, 2006
    Date of Patent: December 9, 2008
    Assignee: Zhejiang Hangzhou Xinfu Pharmaceutical Co., Ltd
    Inventors: Zhihao Sun, Pu Zheng, Xinfu Guo, Guanyu Lin, Hanghua Yin, Jun Wang, Yanbing Bai
  • Method for the producing vanillic acid and vanillin from waste residue of rice bran oil by fermentation and biotransformation
    Publication number: 20060292676
    Abstract: A method for the production of vanillic acid and vanillin from waste residue (niger) of rice bran oil by microbial fermentation and biotransformation is provided. The method of the present invention comprises the steps of hydrolization of ferulic acid esters in waste residue of rice bran oil to ferulic acid and further conversion into vanillic acid using microbial strain Aspergillus niger CGMCC 0774 screened and preserved by the present inventor, followed by conversion of vanillic acid to produce vanillin using another microbial strain Pycnoporus cinnabarinus CGMCC 1115. The method for the production of vanillin according to the present invention utilizes renewable source from rice processing and alleviates the environmental pollution caused by the chemical synthesis of vanillin.
    Type: Application
    Filed: January 27, 2006
    Publication date: December 28, 2006
    Applicants: Zhejiang Hangzhou Xinfu Pharmaceutical Co. Ltd., Southern Yangtze University
    Inventors: Zhihao Sun, Pu Zheng, Xinfu Guo, Guanyu Lin, Hanghua Yin, Jun Wang, Yanbing Bai