Mineral oils: processes and products – Products and compositions – Lubricating oils
Reexamination Certificate
2006-11-28
2006-11-28
McAvoy, Ellen M. (Department: 1764)
Mineral oils: processes and products
Products and compositions
Lubricating oils
C208S019000, C208S950000, C508S110000, C585S001000, C585S502000
Reexamination Certificate
active
07141157
ABSTRACT:
A process for preparing Fischer-Tropsch derived lubricating base oils by blending a Fischer-Tropsch distillate fraction having a viscosity of 2 or greater but less than 3 cSt at 100 degrees C. with a Fischer-Tropsch derived bottoms fraction; lubricating base oil compositions having a viscosity between about 3 and about 10 cSt at 100 degrees C. and a TGA Noack volatility of less than about 45 weight percent; and finished lubricants using the aforesaid lubricating base oils.
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Kramer David
Pudlak Joseph
Rosenbaum John
Chevron U.S.A. Inc.
McAvoy Ellen M.
Roth Steven H.
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