Method and apparatus for adjusting pitch material
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United States of America Patent
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Jun 13, 2017
Grant Date -
Jun 18, 2015
app pub date -
Nov 12, 2014
filing date -
Nov 18, 2013
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Abstract
A method for adjusting the softening point of a pitch material includes heating the pitch material to form molten pitch material, and rising the softening point of the pitch material by moving a plurality of movable members so that the movable members repetitively move at least some of the molten pitch material out of a liquid level of the molten pitch material and back to the molten pitch material.
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