Patents by Inventor Limin Tao

Limin Tao 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).

  • Tantalum-material multilevel distillation crucible and distillation process
    Patent number: 9255307
    Abstract: A tantalum-material multilevel distillation crucible; the distillation crucible comprises a crucible body (1), an insulation plate (2), and a receiving hood (3); the insulation plate (2) is sheathed in the upper part of the crucible body (1), and the receiving cover is disposed on top of the crucible body (1) and above the insulation plate (2); the crucible body (1) is made of tantalum in a horn-shaped circular truncated cone increasing in size from top to bottom; and the insulation plate (2) is made of a high-temperature resistant refractory material with good insulation performance, characterized by: the insulation plate (2) comprises of a plurality of insulation plates that can be stacked and used (2); and a heating unit (6) provided with a plurality of pads (5) that can be stacked and used at the bottom of the crucible.
    Type: Grant
    Filed: April 10, 2012
    Date of Patent: February 9, 2016
    Assignee: Jiangxi Rare Earth and Rare Metals Tungsten Group Holding Co., Ltd.
    Inventors: Ping Yuan, Limin Tao, Qiuhua Xu
  • TANTALUM-MATERIAL MULTILEVEL DISTILLATION CRUCIBLE AND DISTILLATION PROCESS
    Publication number: 20140034480
    Abstract: A tantalum-material multilevel distillation crucible; the distillation crucible comprises a crucible body (1), an insulation plate (2), and a receiving hood (3); the insulation plate (2) is sheathed in the upper part of the crucible body (1), and the receiving cover is disposed on top of the crucible body (1) and above the insulation plate (2); the crucible body (1) is made of tantalum in a horn-shaped circular truncated cone increasing in size from top to bottom; and the insulation plate (2) is made of a high-temperature resistant refractory material with good insulation performance, characterized by: the insulation plate (2) comprises of a plurality of insulation plates that can be stacked and used (2); and a heating unit (6) provided with a plurality of pads (5) that can be stacked and used at the bottom of the crucible.
    Type: Application
    Filed: April 10, 2012
    Publication date: February 6, 2014
    Inventors: Ping Yuan, Limin Tao, Qiuhua Xu