Reduced puffing needle coke from coal tar

Details Reduced puffing needle coke from coal tar Reduced puffing needle coke from coal tar

2011-08-30

2011-08-30

Caldarola, Glenn A (Department: 1771)

Mineral oils: processes and products

Asphalts, tars, pitches and resins; making, treating and...

Chemical modification of asphalt, tar, pitch or resin

C208S046000, C208S049000, C208S050000, C208S039000, C502S020000, C502S034000, C502S055000, C502S056000, C502S400000, C502S416000, C502S405000, C502S406000

Reexamination Certificate

active

08007658

ABSTRACT:
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.

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