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• 15 United States
• 10 France
• 8 Japan
• 7 China
• 5 Korea
• 2 Other

Patent Owner(s)

Patent Owner	Address
CHEVRON CHEMICAL COMPANY LLC	555 MARKET STREET SAN FRANCISCO CA 94105

International Classification(s)

• C10M:LUBRICATING COMPOSITIONS

• 1998 Application Filing Year
• C10M Class
• 207 Applications Filed
• 118 Patents Issued To-Date
• 57.01 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Batelier, Dominique	LeHavre, FR	2	1
# of filed Patents : 2 Total Citations : 1
Cazin, Jacques	Saint Martin du Manoir, FR	11	102
# of filed Patents : 11 Total Citations : 102
Clement, Olivier Pascal Marie	LeHavre, FR	2	5
# of filed Patents : 2 Total Citations : 5
Sausse, Christophe Le	Montivilliers, FR	1	0
# of filed Patents : 1 Total Citations : 0

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Patent Citation Ranking

• 0 Citation Count
• C10M Class

• 0 % this patent is cited more than
• 22 Age

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge after expiration - Late payment is unavoidable	$700.00	$350.00	$175.00
Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
September 23, 2003	US,6624123,B2   US6624123B2	GRANTED PATENT AS SECOND PUBLICATION
March 14, 2002	US,20020032127,A1   US20020032127A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6624123

Use of surfactants with high molecular weight for improving the filterability in hydraulic lubricants

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Abstract

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A hydraulic oil, a predominant amount of an oil having a viscosity suitable for lubrication, and from 0.03% to 0.06% of an agent improving filterability, corresponding to the formula R--Z. Z represents an ester of succinic acid comprising the reaction product of a succinic anhydride and an aliphatic polyhydric alcohol; or a succinimide comprising the reaction product of a succinic anhydride and a polyamine, the said reaction product being treated with an after-treatment agent. R represents a polyolefin having a molecular weight (Mn) of 500 to 2500 and an Mw/Mn ratio of 1 to 5.

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Description

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Claims

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