Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Heavy metal or aluminum bonded directly to carbon
Reexamination Certificate
2011-08-02
2011-08-02
Caldarola, Glenn A (Department: 1771)
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Heavy metal or aluminum bonded directly to carbon
C508S363000, C508S379000, C508S459000, C508S537000
Reexamination Certificate
active
07989407
ABSTRACT:
The present invention is directed to lubricating oils exhibiting improved resistance to oxidation and deposit/sludge formation comprising a lubricant base oil and an effective amount of a catalytic antioxidant comprising one or more polymetal organometallic compound, to a method for improving the antioxidancy and the resistance to deposit/sludge formation of formulated lubricating oil compositions by the addition thereto of an effective amount of the aforementioned polymetal organometallic compound, and to an additive concentrate containing the aforementioned polymetal organometallic compound.
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Habeeb Jacob J.
Landis Michael E.
Patil Abhimanyu O.
Rucker Steven P.
Caldarola Glenn A
ExxonMobil Research and Engineering Company
Montalvo L.
Vasisth Vishal
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