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. 07, 2012
Filed:
Oct. 14, 2008
Bin LI, Shizuishan, CN;
Luntao Pan, Shizuishan, CN;
Aiguo Zheng, Shizuishan, CN;
Yuezhong MA, Shizuishan, CN;
Yuewei Cheng, Shizuishan, CN;
Xuecheng Dong, Shizuishan, CN;
Xueqing Zhang, Shizuishan, CN;
Zhidao Wang, Shizuishan, CN;
Baojun Zhu, Shizuishan, CN;
Bin Li, Shizuishan, CN;
Luntao Pan, Shizuishan, CN;
Aiguo Zheng, Shizuishan, CN;
Yuezhong Ma, Shizuishan, CN;
Yuewei Cheng, Shizuishan, CN;
Xuecheng Dong, Shizuishan, CN;
Xueqing Zhang, Shizuishan, CN;
Zhidao Wang, Shizuishan, CN;
Baojun Zhu, Shizuishan, CN;
Ningxia Orient Tantalum Industry Co., Ltd., Shizuishan, Ningxia, CN;
Abstract
The present invention relates to valve metal particles uniformly containing nitrogen and a method for preparing the same, and a valve metal green pellet and a sintered pellet made from the particles, and an electrolytic capacitor anode. The present invention provides valve metal particles uniformly containing nitrogen, wherein the difference ratio of nitrogen contents of particles is 20% or less. The present invention provides a process for preparing said valve metal particles uniformly containing nitrogen, wherein the raw material particles of the valve metal were heated in a nitrogen-containing gas at a temperature of 200° C. or less for 2 hours or more. The present invention also provides a valve metal green pellet made from said valve metal particles. The present invention also provides a valve metal sintered pellet.