Patents by Inventor Xuejun DONG

Xuejun 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).

  • Bitrate adaptation for low latency streaming
    Patent number: 11172246
    Abstract: A system for bitrate adaptation for low latency streaming includes an interface and a processor. The interface is configured to receive statistics, wherein the statistics comprise a server latency and a buffer level. The processor is configured to perform a set of checks based at least in part on the statistics, determine a streaming bitrate based at least in part on the set of checks, and indicate the streaming bitrate.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: November 9, 2021
    Assignee: VisualOn, Inc.
    Inventors: Mei Fang, Yisheng Yao, Xuejun Dong, Huan-Chih Tsai
  • Process for preparation of lactone derivatives and intermediates thereof
    Patent number: 10611739
    Abstract: A novel process for the preparation of lactone derivatives, and intermediates thereof is described. The lactone derivatives are important precursors for the synthesis of anti-hepatitis C virus agents, including sofosbuvir.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: April 7, 2020
    Assignee: PHARMARESOURCES (SHANGHAI) CO., LTD.
    Inventors: Ping Chen, Shaoping Peng, Yinqiang Li, Dafeng Li, Xuejun Dong
  • PROCESS FOR PREPARATION OF LACTONE DERIVATIVES AND INTERMEDIATES THEREOF
    Publication number: 20190210981
    Abstract: A novel process for the preparation of lactone derivatives, and intermediates thereof is described. The lactone derivatives are important precursors for the synthesis of anti-hepatitis C virus agents, including sofosbuvir.
    Type: Application
    Filed: August 16, 2016
    Publication date: July 11, 2019
    Inventors: Ping CHEN, Shaoping PENG, Yinqiang LI, Dafeng LI, Xuejun DONG