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:
Dec. 14, 2010
Filed:
May. 27, 2009
Zhiqiang Chen, Beijing, CN;
Yuanjing LI, Beijing, CN;
Hua Peng, Beijing, CN;
Qingjun Zhang, Beijing, CN;
Jin Lin, Beijing, CN;
Shaoji Mao, Beijing, CN;
Zhude Dai, Beijing, CN;
Shiping Cao, Beijing, CN;
Zhongxia Zhang, Beijing, CN;
Yangtian Zhang, Beijing, CN;
Dexu Lin, Beijing, CN;
Qinghua Wang, Beijing, CN;
Shaofeng Wang, Beijing, CN;
Hui LI, Beijing, CN;
Zhiqiang Chen, Beijing, CN;
Yuanjing Li, Beijing, CN;
Hua Peng, Beijing, CN;
Qingjun Zhang, Beijing, CN;
Jin Lin, Beijing, CN;
Shaoji Mao, Beijing, CN;
Zhude Dai, Beijing, CN;
Shiping Cao, Beijing, CN;
Zhongxia Zhang, Beijing, CN;
Yangtian Zhang, Beijing, CN;
Dexu Lin, Beijing, CN;
Qinghua Wang, Beijing, CN;
Shaofeng Wang, Beijing, CN;
Hui Li, Beijing, CN;
Nuctech Company Limited, , CN;
Tsinghua University, , CN;
Abstract
Disclosed is an electrode structure for a drift tube in IMS comprising a ring electrode, for each of two surfaces of the ring electrode, at least a part adjacent to the inner radius is formed into a cone, and the angles formed between the cones and the axis of the ring electrode are different from each other. The electrode structure of the present invention can alleviate, even eliminate, the accumulation of space charges in the drift tube. Such structure is particularly suitable when the electric field in the drift tube is low in strength or a great number of ions pass through. Meanwhile, the structure allows a significant decrease in the size of the outer radius of the electrode, while the inner radius remains constant. In this way, it is possible to effectively reduce the outline size of the drift tube and thus make the IMS compact.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile