Method for producing and magnetising a bitumen film...

Details Method for producing and magnetising a bitumen film... Method for producing and magnetising a bitumen film...

2008-03-18

2008-03-18

Sheehan, John P. (Department: 1742)

Compositions

Magnetic

With wax, bitumen, resin, or gum

C148S104000, C148S103000, C148S108000

Reexamination Certificate

active

10481820

ABSTRACT:
A bitumen film containing magnetic powder is heated prior to magnetization to a temperature enabling the magnetic powder particles to be oriented according to the effect of the magnetic field. The bitumen film is sufficiently cooled after magnetization in order to preserve the magnetization, whereby the orientation of the magnetic powder particles, which is adjusted during magnetization, is maintained.

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Machine Translation of DE 3825494 A1.

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