Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2011-08-30
2011-08-30
Caldarola, Glenn A (Department: 1771)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
C208S044000, C208S046000, C208S049000, C208S039000, C502S020000, C502S034000, C502S055000, C502S056000, C502S400000, C502S405000, C502S406000
Reexamination Certificate
active
08007660
ABSTRACT:
A reduced puffing needle coke is formed from decant oil, 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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Chang Ching-Feng
Lewis Irwin C.
Miller Douglas J.
Shao Richard L.
Tomasek Aaron
Caldarola Glenn A
Cartiglia James R.
GrafTech International Holdings Inc.
Stein Michelle L
Waddey & Patterson , P.C.
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