Patents by Inventor Weifang XI

Weifang XI 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).

  • METHODS FOR HARVESTING MICROALGAE
    Publication number: 20220356438
    Abstract: Methods for harvesting microalgae, comprise providing water containing microalgae, providing flocculant in an amount to form flocs of microalgae when mixed with the water, generating a mixture of the water and the flocculant and separating the flocs from the mixture.
    Type: Application
    Filed: December 14, 2021
    Publication date: November 10, 2022
    Applicant: SHENZHEN QIANHAI XIAOZAO TECHNOLOGY CO., LTD.
    Inventors: Weifang XI, Wei YU, Hongjia ZHANG
  • Production of algae-derived polyunsaturated fatty acids
    Patent number: 11401540
    Abstract: Disclosed is a method for producing algae-derived polyunsaturated fatty acids, comprising the steps of a) contacting dry algae with ethanol; b) removing ethanol to obtain crude oil; c) subjecting the crude oil to a transesterification reaction with a lower alcohol to generate fatty acid alkyl esters; d) extracting the fatty acid alkyl esters to result in a phase containing fatty acid alkyl esters; e) collecting the phase containing fatty acid alkyl esters; and f) contacting the collected phase with silica gel. Also disclosed is a method for effectively removing impurities, including chlorophyll, fucoxanthin and beta-carotene, from crude algal fatty acid alkyl esters, comprising contacting the crude algal fatty acid alkyl esters with silica gel in hexane.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: August 2, 2022
    Assignee: GUANGXI XIAOZAO AGRICULTURE TECHNOLOGY CO., LTD.
    Inventors: Wei Yu, WeiFang Xi, XiaoLi Wu, HongJia Zhang, Lei Wang
  • Methods for harvesting microalgae
    Patent number: 11230693
    Abstract: Methods for harvesting microalgae, comprise providing water containing microalgae, providing flocculant in an amount to form flocs of microalgae when mixed with the water, generating a mixture of the water and the flocculant and separating the flocs from the mixture.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: January 25, 2022
    Assignee: SHENZHEN QIANHAI XIAOZAO TECHNOLOGY CO., LTD.
    Inventors: Weifang Xi, Wei Yu, Hongjia Zhang
  • PRODUCTION OF ALGAE-DERIVED POLYUNSATURATED FATTY ACIDS
    Publication number: 20200231996
    Abstract: Disclosed is a method for producing algae-derived polyunsaturated fatty acids, comprising the steps of a) contacting dry algae with ethanol; b) removing ethanol to obtain crude oil; c) subjecting the crude oil to a transesterification reaction with a lower alcohol to generate fatty acid alkyl esters; d) extracting the fatty acid alkyl esters to result in a phase containing fatty acid alkyl esters; e) collecting the phase containing fatty acid alkyl esters; and f) contacting the collected phase with silica gel. Also disclosed is a method for effectively removing impurities, including chlorophyll, fucoxanthin and beta-carotene, from crude algal fatty acid alkyl esters, comprising contacting the crude algal fatty acid alkyl esters with silica gel in hexane.
    Type: Application
    Filed: November 17, 2017
    Publication date: July 23, 2020
    Applicant: Guangxi Xiaozao Agricultural Technology Co., Ltd.
    Inventors: Wei YU, WeiFang XI, XiaoLi WU, HongJia ZHANG, Lei WANG
  • METHODS FOR HARVESTING MICROALGAE
    Publication number: 20200181563
    Abstract: Methods for harvesting microalgae, comprise providing water containing microalgae, providing flocculant in an amount to form flocs of microalgae when mixed with the water, generating a mixture of the water and the flocculant and separating the flocs from the mixture.
    Type: Application
    Filed: July 25, 2017
    Publication date: June 11, 2020
    Applicant: SHENZHEN QIANHAI XIAOZAO TECHNOLOGY CO., LTD.
    Inventors: Weifang XI, Wei YU, Hongjia ZHANG