Patents by Inventor Yumei YONG

Yumei YONG 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).

  • Passive spiral micromixer and its applications
    Patent number: 8894966
    Abstract: A micro-mixer and use thereof for synthesis of barium sulfate particles is disclosed. The micro-mixer includes feeding tubes, reservoirs, a mixing channel, a buffer reservoir and a sampling tube. The mixing channel is made of hydrophobic materials and processed into a spiral structure, in which baffles are set in interval arrangement at both sides of the channel wall. The types of the baffles include leaning-forward baffles, vertical baffles and leaning-backward baffles. Setting the baffles helps produce local secondary flow in the mixer, which enhances fluids mixing process. The micro-mixer is suitable to rapid reactions or precipitation processes, whose reaction time is much less than mixing time, and has broad application prospects in many fields involving mixing reaction such as pharmaceutical and chemistry industry.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: November 25, 2014
    Assignees: Institute of Process Engineering, Chinese Academy of Sciences, Nanjing Ziuzhang Chemical Technology Co., Ltd
    Inventors: Chao Yang, Xi Wang, Yumei Yong, Guangji Zhang, Jingcai Cheng, Xin Feng, Xiangyang Li, Weipeng Zhang, Yuanyuan Li, Zaisha Mao
  • PASSIVE SPIRAL MICROMIXER AND ITS APPLICATIONS
    Publication number: 20140120031
    Abstract: A micro-mixer and use thereof for synthesis of barium sulfate particles is disclosed. The micro-mixer includes feeding tubes, reservoirs, a mixing channel, a buffer reservoir and a sampling tube. The mixing channel is made of hydrophobic materials and processed into a spiral structure, in which baffles are set in interval arrangement at both sides of the channel wall. The types of the baffles include leaning-forward baffles, vertical baffles and leaning-backward baffles. Setting the baffles helps produce local secondary flow in the mixer, which enhances fluids mixing process. The micro-mixer is suitable to rapid reactions or precipitation processes, whose reaction time is much less than mixing time, and has broad application prospects in many fields involving mixing reaction such as pharmaceutical and chemistry industry.
    Type: Application
    Filed: October 31, 2013
    Publication date: May 1, 2014
    Applicants: Nanjing Jiuzhang Chemical Technology Co., Ltd, Institute of Process Engineering, Chinese Academy of Sciences
    Inventors: Chao YANG, Xi WANG, Yumei YONG, Guangji ZHANG, Jingcai CHENG, Xin FENG, Xiangyang LI, Weipeng ZHANG, Yuanyuan LI, Zaisha MAO