Mineral oils: processes and products – Refining – Sulfur removal
Reexamination Certificate
2007-06-19
2007-06-19
Caldarola, Glenn (Department: 1764)
Mineral oils: processes and products
Refining
Sulfur removal
C208S25100H, C208S25400R, C208S217000, C208S213000
Reexamination Certificate
active
09869987
ABSTRACT:
A process for hydrofining a lubricating oil feedstock comprising contacting the feedstock with a hydrofining catalyst in a hydrofining zone under hydrofining conditions wherein the hydrofining catalyst comprises a bulk metal catalyst containing non-noble Group VIII metal molybdate in which at least a portion but less than all of the molybdenum is replaced by tungsten.
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Demmin Richard Alan
Miseo Sabato
Riley Kenneth Lloyd
Soled Stuart Leon
Caldarola Glenn
Exxonmobil Research and Engineering Company
March In Suk
Naylor H. E.
Takemoto J. H.
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