Patent · US Active

External field—free magnetic biosensor

US9927431B2 · kind B2 · utility

4Cited by

6References

32Claims

0Family size

Assignee

Regents of the University of Minnesota · US

Inventors

Jian-Ping Wang · Shoreview, US
Yuanpeng Li · Minneapolis, US
Wang Yi · Bodden Town, KY

Key dates

Filing date	Sep 14, 2012
Grant date	Mar 27, 2018
Priority date	—
Expiry date	Nov 15, 2034

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/4902
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A biosensor includes a magnetic structure having grooved surface to biologically bond magnetic labels to a biological substance within the grooves. The grooves are positioned within the magnetic structure so that stray magnetic fields from the magnetic structure magnetize magnetic labels within the groove. The magnetic labels may be magnetic nanoparticles or magnetic microbeads. The techniques may reduce or eliminate the usage of any external magnetic field generator, e.g., electromagnets or current lines.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.