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:
Apr. 15, 2014
Filed:
Apr. 25, 2012
Hiroto Itoi, Kyoto, JP;
Daisuke Okumura, Nagaokakyo, JP;
Hiroto Itoi, Kyoto, JP;
Daisuke Okumura, Nagaokakyo, JP;
Shimadzu Corporation, Kyoto, JP;
Abstract
The gas conductance on the ion injection side of a collision cell is made larger than the gas conductance on the ion exit side by providing two ion injection aperturesin the collision cell. Due to the different gas conductances, a CID gas supplied through the gas supply tubegenerally flows in a direction from the ion injection side to the ion exit side in the collision cell, namely, in the ion's passage direction. When the ions injected in the collision cellslow down upon contacting with the CID gas, their progress is assisted by the gas flow, so that the delay of the ions in the collision cellis alleviated. As a result, it is possible to avoid a deterioration in the detection sensitivity of a target product ion and to prevent a ghost peak caused by the stay of the ions.