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.

Date of Patent:
Jun. 30, 2026

Filed:

Apr. 07, 2022
Applicant:

Dh Technologies Development Pte. Ltd., Singapore, SG;

Inventors:

Thomas R. Covey, Concord, CA;

Chang Liu, Richmond Hill, CA;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J 49/04 (2006.01);
U.S. Cl.
CPC ...
H01J 49/0445 (2013.01); H01J 49/0409 (2013.01); H01J 49/0454 (2013.01);
Abstract

In one aspect, a method of extracting a target analyte from a sample for introduction into a mass spectrometer is disclosed, which includes mixing the sample with a paramagnetic medium to form a mixture, subjecting the mixture to a magnetic field gradient to form a non-homogenous distribution of at least one of the analyte and at least one interfering component of the sample, if any, thereby enhancing a concentration of the target analyte within a spatial location of said mixture, extracting at least a portion of the target analyte from that spatial location, and introducing at least a portion of the extracted target analyte into said mass spectrometer.


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