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:
Nov. 28, 2006
Filed:
Sep. 17, 2004
Applicants:
Donald J. Douglas, Vancouver, CA;
Chuan-fan Ding, Vancouver, CA;
Frank Londry, Peterborough, CA;
Inventors:
Assignee:
MDS Inc., Concord, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 49/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method and apparatus for manipulating ions using a two-dimensional substantially quadrupole field, and a method of manufacturing and operating an apparatus for manipulating ions using a two-dimensional substantially quadrupole field are described. The field has a quadrupole harmonic with amplitude Aand a hexapole harmonic with amplitude A. The amplitude Aof the hexapole component of the field is selected to improve the performance of the field with respect to ion selection and ion fragmentation.