Resin particles with magnetic particles bonded to surface
US4438179A · kind A · utility
15Cited by
8References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 3, 1982 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | Feb 3, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2998
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Plastic particles having diameters of from about 1 to about 150 microns, a polymeric bonding layer on the surface thereof, are coated with magnetic particles to provide a generally uniform coating having a thickness of from about 0.05 to about 0.8 of a micron.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.