Planarized read/write head and method
US4860139A · kind A · utility
19Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1987 |
| Grant date | Aug 22, 1989 |
| Priority date | — |
| Expiry date | Jun 19, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49064
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A probe-type, electromagnetic read/write head for perpendicular reading and writing, and a method for making the same, wherein the resulting head is characterized by a flux-return portion, and a pole portion which is spaced from but magnetically coupled to the pole portion, with its side which faces the flux-return portion, throughout its entirety, being planar.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.