Patents by Inventor Wanping REN

Wanping REN 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 of purifying methionine
    Patent number: 10669233
    Abstract: The present invention provides a process for purifying methionine. A methionine product having a purity of up to 99% or higher is obtained by separating methionine from a salt by-product through a process comprising adsorption and desorption using a macroporous adsorption resin, where the methionine content in the salt by-product is ?0.03%. The yield of methionine extracted with the resin is up to 98% or higher. By using the process of the present invention, the existing production process is simplified, the quality of the methionine product is improved, and the production costs for methionine are reduced.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: June 2, 2020
    Assignees: SUNRESIN NEW MATERIALS CO. LTD., XI'AN, Bluestar Adisseo Nanjing Co., Ltd.
    Inventors: Xiaokang Kou, Risheng Wang, Gang Wang, Qiong Liu, Wanping Ren, Julien Boutet, Yuanbin Yang, Valentin Guidal
  • PROCESS OF PURIFYING METHIONINE
    Publication number: 20190210964
    Abstract: The present invention provides a process for purifying methionine. A methionine product having a purity of up to 99% or higher is obtained by separating methionine from a salt by-product through a process comprising adsorption and desorption using a macroporous adsorption resin, where the methionine content in the salt by-product is 0.03%. The yield of methionine extracted with the resin is up to 98% or higher. By using the process of the present invention, the existing production process is simplified, the quality of the methionine product is improved, and the production costs for methionine are reduced.
    Type: Application
    Filed: March 19, 2019
    Publication date: July 11, 2019
    Applicants: SUNRESIN NEW MATERIALS CO.LTD., XI AN, BLUESTAR ADISSEO NANJING CO.,LTD.
    Inventors: Xiaokang KOU, Risheng WANG, Gang WANG, Qiong LIU, Wanping REN, Julien BOUTET, Yuanbin YANG, Valentin GUIDAL
  • Process of purifying methionine
    Patent number: 10287244
    Abstract: The present invention provides a process for purifying methionine. A methionine product having a purity of up to 99% or higher is obtained by separating methionine from a salt by-product through a process comprising adsorption and desorption using a macroporous adsorption resin, where the methionine content in the salt by-product is ?0.03%. The yield of methionine extracted with the resin is up to 98% or higher. By using the process of the present invention, the existing production process is simplified, the quality of the methionine product is improved, and the production costs for methionine are reduced.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: May 14, 2019
    Assignees: SUNRESIN NEW MATERIALS CO. LTD., XI'AN, Bluestar Adisseo Nanjing Co., Ltd.
    Inventors: Xiaokang Kou, Risheng Wang, Gang Wang, Qiong Liu, Wanping Ren, Julien Boutet, Yuanbin Yang, Valentin Guidal
  • PROCESS OF PURIFYING METHIONINE
    Publication number: 20180194723
    Abstract: The present invention provides a process for purifying methionine. A methionine product having a purity of up to 99% or higher is obtained by separating methionine from a salt by-product through a process comprising adsorption and desorption using a macroporous adsorption resin, where the methionine content in the salt by-product is ?0.03%. The yield of methionine extracted with the resin is up to 98% or higher. By using the process of the present invention, the existing production process is simplified, the quality of the methionine product is improved, and the production costs for methionine are reduced.
    Type: Application
    Filed: June 28, 2016
    Publication date: July 12, 2018
    Applicants: SUNRESIN NEW MATERIALS CO.LTD., XI AN, BLUESTAR ADISSEO NANJING CO.,LTD.
    Inventors: Xiaokang KOU, Risheng WANG, Gang WANG, Qiong LIU, Wanping REN, Julien BOUTET, Yuanbin YANG, Valentin GUIDAL