The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2020
Filed:
Feb. 27, 2014
Ningxia Orient Tantalum Industry Co., Ltd., Ningxia, CN;
Zhongxiang Li, Ningxia, CN;
Yuewei Cheng, Ningxia, CN;
Xueqing Chen, Ningxia, CN;
Ting Wang, Ningxia, CN;
Dejun Shi, Ningxia, CN;
Zekun Tong, Ningxia, CN;
Yan Yan, Ningxia, CN;
Xiaoyu Tian, Ningxia, CN;
Zhonghuan Zhao, Ningxia, CN;
Ningxia Orient Tantalum Industry Co., Ltd., Ningxia, CN;
Abstract
The present invention relates to a high-purity tantalum powder and a preparation method therefore. The tantalum powder has a purity of more than 99.995%, as analyzed by GDMS. Preferably, the tantalum powder has an oxygen content of not more than 1000 ppm, a nitrogen content of not more than 50 ppm, a hydrogen content of not more than 20 ppm, a magnesium content of not more than 5 ppm, and an average particle diameter D50 of less than 25 μm.