Patents by Inventor Xiangyun Qian

Xiangyun Qian 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).

  • Method for preparing high purity L-? glycerylphosphorylcholine
    Patent number: 8658401
    Abstract: Disclosed is a method for preparing L-?-Glycerylphosphorylcholine with high yields and purity. The method uses phospholipase A1-based enzymatic hydrolysis, ion-exchange resin purification and silica gel column chromatography to prepare L-?-glycerylphosphorylcholin with purity up to 99.8% and a final yield up to 78.4%. The method disclosed is simple, cost-effective, environmentally friendly, and adaptable to industrial applications.
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: February 25, 2014
    Assignee: Jiannan University
    Inventors: Yuanfa Liu, Kangyi Zhang, Xingguo Wang, Xiangyun Qian, Li Zhou, Zhihua Song
  • Method for Preparing High Purity L-alpha Glycerylphosphorylcholine
    Publication number: 20120244583
    Abstract: Disclosed is a method for preparing L-?-Glycerylphosphorylcholine with high yields and purity. The method uses phospholipase A1-based enzymatic hydrolysis, ion-exchange resin purification and silica gel column chromatography to prepare L-?-glycerylphosphorylcholin with purity up to 99.8% and a final yield up to 78.4%. The method disclosed is simple, cost-effective, environmentally friendly, and adaptable to industrial applications.
    Type: Application
    Filed: March 24, 2011
    Publication date: September 27, 2012
    Inventors: Yuanfa Liu, Kangyi Zhang, Xingguo Wang, Xiangyun Qian, Li Zhou, Zhihua Song
  • METHOD FOR PUBLISHING, QUERYING AND SUBSCRIBING TO INFORMATION BY A SIP TERMINAL IN A VoIP NETWORK SYSTEM, SIP TERMINAL, SIP APPLICATION SERVER, SIP INFORMATION CENTER AND VoIP NETWORK SYSTEM
    Publication number: 20110216759
    Abstract: The invention provides method for publishing, querying, subscribing to information by a SIP terminal in a VoIP network system, a SIP terminal, a SIP application server, a SIP information center and the VoIP network system. Wherein the VoIP network system is deployed with SIP information center for storing and providing at least the information. The method for publishing information by a SIP terminal in a VoIP network system comprises: creating a publishing request with the information to be published embedded in at the SIP terminal; sending the publishing request from the SIP terminal to the SIP information center via the SIP application server; recording the information in the SIP information center's database; and notifying the new information update to the subscribed SIP terminals.
    Type: Application
    Filed: August 2, 2007
    Publication date: September 8, 2011
    Inventors: Xiangyun Qian, Aihao Yin, Xiao Wang, Peng Liu
  • Set of mats
    Patent number: D1024890
    Type: Grant
    Filed: April 29, 2022
    Date of Patent: April 30, 2024
    Inventor: Xiangyun Qian