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:
Jan. 12, 2010
Filed:
May. 07, 2002
Atsumu Hirabayashi, Kokubunji, JP;
Minoru Sakairi, Kawagoe, JP;
Yasuaki Takada, Kokubunji, JP;
Hideaki Koizumi, Tokyo, JP;
Kaoru Umemura, Musashino, JP;
Atsumu Hirabayashi, Kokubunji, JP;
Minoru Sakairi, Kawagoe, JP;
Yasuaki Takada, Kokubunji, JP;
Hideaki Koizumi, Tokyo, JP;
Kaoru Umemura, Musashino, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An ion source includes a body having a gas passage and an orifice. A capillary is inserted into the gas passage so that a tip portion of the capillary extends into the orifice. A gas supplier supplies a gas into the gas passage to form a gas flow through the gas passage along the capillary and through the orifice past a tip of the capillary so that the gas flow sprays a sample solution flowing through the capillary from the tip of the capillary. A flow controller regulates a pressure of the gas in the gas passage to adjust a characteristic value F/S to a predetermined value, where F is a flow rate of the gas flow at standard conditions (20° C., 1 atmosphere), and S is a difference between a cross section of the orifice and a cross section of the tip portion of the capillary in the orifice.