Magnetic recording medium
US4404259A · kind A · utility
1Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1981 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Oct 21, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31797
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A magnetic recording medium having a substrate coated with a magnetic layer comprises a magnetic powder and a binder, essentially consisting of 40 to 80 wt. % of a polyester resin, 60 to 20 wt. % of a nitrocellulose impregnated with vinyl chloride-vinyl acetate copolymer as a protective component and a polyisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.