Glass bonding of manganese-zinc ferrite
US4048714A · kind A · utility
17Cited by
4References
9Claims
0Family size
Inventor
Key dates
| Filing date | Jun 21, 1976 |
| Grant date | Sep 20, 1977 |
| Priority date | — |
| Expiry date | Jun 21, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49057
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of minimizing or eliminating reactions between a surface of manganese zinc ferrite and a glass bonding composition applied thereto is disclosed, wherein a barrier layer is formed upon the manganese zinc ferrite surface prior to the application of the glass bonding composition. The barrier layer is a chromium layer about 3 - 170 microinches thick. The resulting product is suitable for use in radio frequency recording apparatus, and especially for multi-core magnetic heads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.