Waddey & Patterson, P.C.
Reduced puffing needle coke from coal tar
A reduced puffing needle coke is formed, which includes a lesser amount of nitrogen within the coke so that carbon articles produced from such coke experience minimal expansion upon heating to graphitization temperatures.
GrafTech International Holdings Inc.
C C C C
C10C C10B C10B C10C
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Irwin C. Richard L. Douglas J. Aaron Ching-Feng
Lewis Shao Miller Tomasek Chang