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. 13, 2012
Filed:
Dec. 07, 2009
Yoshiro Shiokawa, Hachioji, JP;
Harumi Maruyama, Inagi, JP;
Yasuyuki Taneda, Inagi, JP;
Megumi Nakamura, Tama, JP;
Yoshiro Shiokawa, Hachioji, JP;
Harumi Maruyama, Inagi, JP;
Yasuyuki Taneda, Inagi, JP;
Megumi Nakamura, Tama, JP;
Canon Anelva Corporation, Kawasaki-shi, JP;
Abstract
The present invention maintains a stable emission amount from an emitter. In an embodiment of the present invention, a solid sample or a liquid sample is heated to gasify an object to be measured contained in the solid sample or the liquid sample, thereby forming a neutral gaseous molecule, and a metal ion emitted from an emitter having an oxidized surface is attached to the neutral gaseous molecule to ionize the neutral gaseous molecule, which is subjected to mass spectrometry. The solid sample or the liquid sample is a sample that emits a reducing gas by heating. The heating for gasifying the object to be measured is performed at a temperature lower than the vaporization temperature of the solid sample or the liquid sample and not less than the vaporization temperature of the object to be measured, and an oxidizing gas is provided to the emitter.