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:
Jun. 15, 2010
Filed:
Jan. 30, 2009
Igor Chernushevich, North York, CA;
Alexandre V. Loboda, Toronto, CA;
Igor Chernushevich, North York, CA;
Alexandre V. Loboda, Toronto, CA;
Abstract
In a tandem mass spectrometer using a collision cell for ion fragmentation, the upper limit of the collision energy required for collision induced dissociation (CID) can be extended without reaching or going beyond the upper electrical discharge limit of the system components. The present teachings describe a method of lifting the potential energy of ions to a predetermined level sufficient for CID fragmentation while satisfying a discharge free condition. The present teaching also describes a method of lifting the potential energy of the fragment ions after CID fragmentation so that the product ions have sufficient energy for mass analysis.