Inductive writer with flat top pole and pedestal defined zero throat
US6870712B2 · kind B2 · utility
165Cited by
10References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2001 |
| Grant date | Mar 22, 2005 |
| Priority date | — |
| Expiry date | Jun 5, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49044
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive write head (10) having a bottom pole (60), a first insulation layer (64) formed on the bottom pole (60), a coil (38) formed on the first insulation layer (64), a second insulation layer (66) formed on the coil (38), a write gap layer (76) formed on the second insulation layer (66), and a top pole (12) formed on the write gap layer (76), where the top pole (12) is substantially flat.A second embodiment (100) is described which is produced by a damascene process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.