Mineral oils: processes and products – Chemical conversion of hydrocarbons – Plural serial stages of chemical conversion
Reexamination Certificate
2008-07-01
2008-07-01
Griffin, Walter D. (Department: 1797)
Mineral oils: processes and products
Chemical conversion of hydrocarbons
Plural serial stages of chemical conversion
C208S004000, C208S006000, C208S022000, C208S023000, C208S039000, C208S040000, C208S041000, C208S044000, C208S045000, C106S273100
Reexamination Certificate
active
07393449
ABSTRACT:
A binder pitch material includes a petroleum pitch and asphalt fraction obtained from petroleum crude oil and has a significantly lower polycyclic aromatic hydrocarbon composition than a coal tar pitch having a like softening point. The pitch material is useful as a binder material for various applications such as clay pigeons.
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Boyer David C.
Kiser Melvin D.
Emch, Schaffer, Schaub & Porcello & Co., L.P.A.
Griffin Walter D.
Marathon Ashland Petroleum LLC
Nguyen Huy-Tram
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