US 10,112,132 B2Granted

Oil additive and oil filter

AssigneeToyota Jidosha Kabushiki Kaisha

InventorsIppei Fukutomi, Motoichi Murakami, Katsuichi Miyasaka, Hideto Morishita, Yasuhiro Saito

Life of this patent

Estimating the term…

An oil additive includes a hydrotalcite-like compound, and a radical trapping agent having a melting point of 130° C. or higher.

Dependent claims

A filter media for an oil filter, the filter media comprising:

a hydrotalcite compound;
and
a radical trapping agent having a melting point of 130° C. or higher,
wherein the hydrotalcite compound is a composition of the following formula
Mg8−xAlx(OH)y(CO3)z·mH2O,
wherein x is equal to or larger than 1 and equal to or smaller than 7,
y, z and m are positive rational numbers,
z is larger than y,
the radical trapping agent is 2,2′-methylenebis[6-(benzotriazole-2-yl)-4-tert-octyl phenol].

6 more elements

Dependencies are inferred from the claim text.

B01D 35/005
Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by…
B01D 15/08
Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor: selective adsorption, e.g. chromatography
C10M 163/00
Lubricating compositions characterised by the additive being a mixture of a compound
F01M 1/10
Pressure lubrication: lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters

From the US filing history. Foreign family members aren’t listed.

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