Patents by Inventor Dongming Mei

Dongming Mei 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 of growing germanium crystals
    Patent number: 10125431
    Abstract: In accordance with the present invention, taught is a high purity germanium crystal growth method utilizing a quartz shield inside a steel furnace. The quartz shield is adapted for not only guiding the flow of an inert gas but also preventing the germanium melt from contamination by insulation materials, graphite crucible, induction coil and stainless steel chamber. A load cell provides automatic control of crystal diameter and helps to ensure exhaustion of the germanium melt. The method is both convenient and effective at producing high purity germanium crystals by relatively low skilled operators.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: November 13, 2018
    Assignee: South Dakota Board of Regents
    Inventors: Guojian Wang, Dongming Mei
  • Method of Growing Germanium Crystals
    Publication number: 20160153117
    Abstract: In accordance with the present invention, taught is a high purity germanium crystal growth method utilizing a quartz shield inside a steel furnace. The quartz shield is adapted for not only guiding the flow of an inert gas but also preventing the germanium melt from contamination by insulation materials, graphite crucible, induction coil and stainless steel chamber. A load cell provides automatic control of crystal diameter and helps to ensure exhaustion of the germanium melt. The method is both convenient and effective at producing high purity germanium crystals by relatively low skilled operators.
    Type: Application
    Filed: June 20, 2014
    Publication date: June 2, 2016
    Applicant: South Dakota Board of Regents
    Inventors: Guojian Wang, Dongming Mei