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.:

US 6979817 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 27, 2005

Filed:

Apr. 08, 2002
Applicants:

Yoshio Yamauchi, Tokyo, JP;

Tohru Natsume, Tokyo, JP;

Toshiaki Isobe, Tokyo, JP;

Inventors:

Yoshio Yamauchi, Tokyo, JP;

Tohru Natsume, Tokyo, JP;

Toshiaki Isobe, Tokyo, JP;

Assignee:

Nano Solution, Inc., Setagaya-Ken, JP;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J049/04 ;
U.S. Cl.
CPC ...
Abstract

A problem is to provide a microspray column capable of increasing the ionization efficiency, and a high sensitive mass spectrometer and a mass spectrometric method using such a microspray column. For solving this problem, we provide a column for introducing a sample in an ionization source of a mass spectrometer (ESI/MS) being designed to ionize a sample molecule with electrospray and introduce it into an analyzer, has structural features of: (1) 0.5 μm or less in an inner diameter of a tip opening of the column; (2) 0.5 μm or more and 5 μm or less in a particle size of a column filler; and (3) fritless, a microspray column having the above (1) to (3), a mass spectrometer having such a microspray column in an ionization source, and a mass spectrometric method capable of performing a nonoflow electrospray with the microspray column.


Find Patent Forward Citations

Yamauchi, Yoshio. (2005). Microspray column, mass spectrometer, and mass spectrometry (U.S. Patent No. 6979817). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6979817

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