Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Reexamination Certificate
2011-05-17
2011-05-17
Davis, Brian J (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
C562S431000, C562S475000, C562S476000, C508S586000
Reexamination Certificate
active
07943796
ABSTRACT:
An overbased salt of an oligomerized alkylhydroxyaromatic compound is disclosed, wherein the alkyl group of the alkylhydroxyaromatic compound is derived from an olefin mixture comprising propylene oligomers having an initial boiling point of at least about 195° C. and a final boiling point of no more than about 325° C. as measured by ASTM D86. Also disclosed is a lubricating oil composition containing at least (a) a major amount of an oil of lubricating viscosity and (b) the overbased salt of the oligomerized alkylhydroxyaromatic compound.
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Campbell Curtis B.
Cisson Charles Michael
Chevron Oronise Company LLC
Davis Brian J
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