Compositions: coating or plastic – Coating or plastic compositions – Bituminous material or tarry residue
Reexamination Certificate
2011-05-31
2011-05-31
Hill, Jr., Robert J (Department: 1774)
Compositions: coating or plastic
Coating or plastic compositions
Bituminous material or tarry residue
C106S270000, C106S285000
Reexamination Certificate
active
07951239
ABSTRACT:
A method of producing a roofing shingle coating asphalt from a non-coating grade asphalt feedstock includes the following steps. The non-coating grade asphalt feedstock is partially blown to lower its penetration to a first penetration that is within or close to a target penetration range of the coating asphalt, and to raise its softening point to a first softening point that is lower than a target softening point range of the coating asphalt. Then a wax is added to the partially blown non-coating grade asphalt to further raise its softening point to a second softening point that is within the target softening point range to produce the coating asphalt.
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Guerra Jason D.
Jones, IV David R.
Trumbore David C.
Hill, Jr. Robert J
MacMillan Sobanski & Todd LLC
McCaig Brian
Owens Corning Intellectual Capital LLC
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