Cyclic nitroxyl compounds as additives for lubricating oils

Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Heterocyclic ring compound; a heterocyclic ring is one...

Reexamination Certificate

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C508S267000, C548S316400

Reexamination Certificate

active

06998368

ABSTRACT:
A composition comprising: (a) from 0.1% to 20% of at least one cyclic compound having a nitroxyl group and a thioamide group; and (b) a lubricating oil.

REFERENCES:
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patent: 3971757 (1976-07-01), Rasberger
patent: 6187722 (2001-02-01), Rowland et al.
patent: 6602831 (2003-08-01), Mukkamala
patent: 6602832 (2003-08-01), Mukkamala et al.
patent: 6734149 (2004-05-01), Mukkamala
patent: WO 0107543 (2001-02-01), None
patent: WO 01/62739 (2001-08-01), None
Derwent Publications Ltd., London, GB: AN 1981-81323D; XP002262369 & SU 802 358 A (Univ Rost); Feb., 7, 1981 Abstract.
Chemical Abstracts Service, Columbus, OH, US: DN: 91:192432, 1979; Darcy: Free Radical derivatives of . . . retrieved from STN; Database accession No. 1979;592432; XP002262368 Abstract.

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