Mineral oils: processes and products – Asphalts – tars – pitches and resins; making – treating and... – By distillation
Reexamination Certificate
2006-03-22
2008-12-16
Brunsman, David M (Department: 1793)
Mineral oils: processes and products
Asphalts, tars, pitches and resins; making, treating and...
By distillation
C208S041000
Reexamination Certificate
active
07465387
ABSTRACT:
A method of making a carbon/graphite product using a coal tar pitch having a softening point in the range of about 150° C. to 250° C. Also, a carbon/graphite product having a softening point in the range of about 150° C. to 250° C. A method of making mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
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Golubic Thomas A.
Krupinski Kenneth C.
Saver William E.
Snyder David R.
Wombles Robert H.
Brunsman David M
Koppers Delaware, Inc.
Reed Smith LLP
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