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

Patent Owner(s)

Patent Owner	Address
RTX CORPORATION	10 FARM SPRINGS ROAD FARMINGTON CT 06032

International Classification(s)

• F01D:NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Barnes, Roland R	Bloomfield, US	4	75
Benjamin, Daniel	Simsbury, US	36	298
Schutte, Peter	San Diego, US	1	10

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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
June 11, 2013	US,8459943,B2   US8459943B2	GRANTED PATENT AS SECOND PUBLICATION
September 15, 2011	US,20110223025,A1   US20110223025A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8459943

Gas turbine engine rotor sections held together by tie shaft, and with blade rim undercut

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