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:
Aug. 10, 2004
Filed:
Feb. 06, 2001
Applicant:
Inventors:
Yukiko Hirabayashi, Kokubunji, JP;
Atsumu Hirabayashi, Kodaira, JP;
Akihiko Okumura, Hachioji, JP;
Hideaki Koizumi, Tokyo, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 2/306 ; H01J 4/900 ;
U.S. Cl.
CPC ...
G01N 2/306 ; H01J 4/900 ;
Abstract
In a sample-introduction tool in which an end of a passage is connected to a reservoir for storing a mobile phase solution, a sample-dropping orifice is provided at the passage and the mobile phase solution and a sample running off from the other end of the passage are introduced into a mass spectrometer by generating a high-speed gas stream around the other end of the passage. The mobile phase solution and the sample are nebulized by the high-speed gas stream, and the injected sample is ionized.