Method for making thin magnetic strips
US5431746A · kind A · utility
14Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 1993 |
| Grant date | Jul 11, 1995 |
| Priority date | — |
| Expiry date | Aug 30, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2211/008
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Methods for preparing magnetic strips are provided in which the strips are manufactured to a thickness of less than about 0.005 inches and are made of a ferrous alloy having a carbon content of from about 0.4 to about 1.2 weight percent. The strips are prepared by first manufacturing an alloy having a carbon content below about 0.5 weight percent to the desired thickness and then subjecting the strip to a carburizing step to raise the carbon content in the strip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.