Patents by Inventor Junchen DONG

Junchen DONG 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).

  • AUTHENTICATION METHOD, APPARATUS AND DEVICE, AND COMPUTER-READABLE STORAGE MEDIUM
    Publication number: 20220209951
    Abstract: An authentication method includes: information to be verified is encrypted according to a first time stamp to obtain a first ciphertext; an authentication request carrying the first ciphertext and the first time stamp is sent to a server; an authentication response corresponding to the authentication request and sent by the server is received, the authentication response carrying a second ciphertext and a second time stamp; and the second ciphertext is decrypted according to the second time stamp to obtain an authentication result of authenticating the information to be verified by the server.
    Type: Application
    Filed: February 11, 2022
    Publication date: June 30, 2022
    Applicant: BEIJING SENSETIME TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Junchen DONG, Daiping ZHAO, Huafu OU, Yuwen SUO, Qiuyuan WANG
  • Preparation and application of cyclodextrin glucosyltransferase mutant
    Patent number: 10876099
    Abstract: The present invention relates to preparation and application of a cyclodextrin glucosyltransferase mutant, belonging to the fields of gene engineering and enzyme engineering. By mutating amino acids of cyclodextrin glucosyltransferase, the enzyme activity of the obtained mutant can reach 2.5 times that of wild enzyme. In addition, the cyclodextrin glucosyltransferase mutant obtained in the present invention is simple in purification and suitable for industrial production.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: December 29, 2020
    Assignee: Jiangnan University
    Inventors: Jing Wu, Lingqia Su, Xiumei Tao, Yusheng Wang, Junchen Dong
  • Preparation and Application of Cyclodextrin Glucosyltransferase Mutant
    Publication number: 20190218530
    Abstract: The present invention relates to preparation and application of a cyclodextrin glucosyltransferase mutant, belonging to the fields of gene engineering and enzyme engineering. By mutating amino acids of cyclodextrin glucosyltransferase, the enzyme activity of the obtained mutant can reach 2.5 times that of wild enzyme. In addition, the cyclodextrin glucosyltransferase mutant obtained in the present invention is simple in purification and suitable for industrial production.
    Type: Application
    Filed: May 29, 2018
    Publication date: July 18, 2019
    Inventors: Jing WU, Lingqia SU, Xiumei TAO, Yusheng WANG, Junchen DONG