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:
Mar. 12, 2013
Filed:
Aug. 30, 2006
Applicants:
Xiang Fang, Beijing, CN;
Chuanfan Ding, Shanghai, CN;
Inventors:
Xiang Fang, Beijing, CN;
Chuanfan Ding, Shanghai, CN;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 49/26 (2006.01);
U.S. Cl.
CPC ...
Abstract
An ion trap, a multiple-electrode-pole system and an electrode pole for mass spectrometric analysis. The electrode pole () is a rod and the shape of at least one side of its cross section is ladder-shape including two or more steps. It develops the structure of the electrode pole; so the mass spectrographs such as the multiple-electrode-pole system and the ion trap and so on using the electrode pole () have an optimized field shape and can be made easily with low cost.