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

Patent Owner(s)

Patent Owner	Address
E I DU PONT DE NEMOURS AND COMPANY	4417 LANCASTER PIKE DUPONT LEGAL WILMINGTON DE 19805

International Classification(s)

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

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Leck, Thomas J	Hockessin, DE	56	1242
Minor, Barbara Haviland	Elkton, MD	252	3480
Nappa, Mario J	Newark, DE	46	361
Sievert, Allen C	Elkton, MD	52	464

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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
August 07, 2007	US,7252780,B2   US7252780B2	GRANTED PATENT AS SECOND PUBLICATION
December 01, 2005	US,20050263736,A1   US20050263736A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 2005/0263,736

1,1,1,2,2,4,5,5,5-nonafluoro-4-(trifluoromethyl)-3-pentanone refrigerant and heat transfer compositions comprising a fluoroether

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