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

Patent Owner(s)

Patent Owner	Address
EXXONMOBIL RESEARCH & ENGINEERING CO	1545 ROUTE 22 EAST P O BOX 900 ANNANDALE NJ 08801

International Classification(s)

• C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....

• 1999 Application Filing Year
• C09K Class
• 622 Applications Filed
• 326 Patents Issued To-Date
• 52.42 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Angelo, Jacob B	Baton Rouge, LA	8	286
# of filed Patents : 8 Total Citations : 286
Kent, Christopher Jeffrey Still	Baton Rouge, LA	6	60
# of filed Patents : 6 Total Citations : 60

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Patent Citation Ranking

• 2 Citation Count
• C09K Class

• 3.49 % this patent is cited more than
• 24 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

Full Text

US Patent No: 6315920

Electrical insulating oil with reduced gassing tendency

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Abstract

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An electrical oil having reduced gassing tendency includes a major amount of a paraffinic or naphthenic basestock and a blend of certain hindered phenols, especially a blend of 2,6-di-t-butyl phenol and 2,6-di-t-butyl cresol. A further enhanced gassing tendency can be provided to the electrical oil by including a tolyltriazole derivative.

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Description

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Claims

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Legal Events

 

• STCH2009
• FP2009
• LAPS2009
• REMI2009
• FPAY2005
• I2001
• AS2001
• F1999
• PD1999

Date	Code	Event	Description
Dec 14, 2009	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Nov 13, 2009	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Nov 13, 2009
Nov 13, 2009	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
May 25, 2009	REMI	MAINTENANCE FEE REMINDER MAILED
Mar 29, 2005	FPAY	FEE PAYMENT	year of fee payment: 4
Nov 13, 2001	I	Issuance
Aug 02, 2001	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KENT, CHRISTOPHER J.S.;ANGELO, JACOB B.;REEL/FRAME:011808/0289;SIGNING DATES FROM 19990819 TO 19990823 Owner name: EXXONMOBIL RESEARCH & ENGINEERING CO., NEW JERSEY
Sep 10, 1999	F	Filing
Sep 10, 1999	PD	Priority Date