Patent · US Expired

Magnetic head

US6507457B2 · kind B2 · utility

8Cited by

14References

29Claims

0Family size

Inventors

Qing He · Plymouth, US
Song S. Xue · Morristown, US
Bryan K. Oliver · Scotts Valley, US
Patrick J. Ryan · Windom, US

Key dates

Filing date	Aug 7, 2001
Grant date	Jan 14, 2003
Priority date	—
Expiry date	Aug 7, 2021

Classification

Technology area (CPC G)Physics
CPC primaryG11B5/3163
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A magnetic head comprising a substrate, a non-magnetic seed layer deposited on the substrate, a bottom magnetic core piece positioned over and contacting the non-magnetic seed layer, a magnetic seed layer, and a top magnetic core piece positioned over and contacting the magnetic seed layer.

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