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

Patent Owner(s)

Patent Owner	Address
SIEMENS GAMESA RENEWABLE ENERGY A/S	BORUPVEJ 16 BRANDE 7330

International Classification(s)

• G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
• G01R:MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC V....
• F03D:WIND MOTORS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Laurberg, Hans	Århus C, DK	25	249

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
7.5 Year Payment	$3600.00	$1800.00	$900.00	Oct 19, 2023
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 19, 2027

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
April 19, 2016	US,9316206,B2   US9316206B2	GRANTED PATENT AS SECOND PUBLICATION
March 22, 2012	US,20120068462,A1   US20120068462A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9316206

Method of and device for determining a common blade frequency of a rotor of a wind turbine, and method of operating a wind turbine

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