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

Patent Owner(s)

Patent Owner	Address
TAKANO CO LTD	JAPAN

International Classification(s)

• 0601:SEATS

• 2010 Application Filing Year
• 0601 Class
• 472 Applications Filed
• 472 Patents Issued To-Date
• 100 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Horiki, Toshiyuki	Nagano, JP	13	669
# of filed Patents : 13 Total Citations : 669
Kaneko, Masashi	Nagano, JP	34	108
# of filed Patents : 34 Total Citations : 108
Tanaka, Kenji	Tokyo, JP	471	6228
# of filed Patents : 471 Total Citations : 6228

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Patent Citation Ranking

• 32 Citation Count
• 0601 Class

• 0 % this patent is cited more than
• 13 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: 7225671

Fluid-quantity gauging

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Abstract

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An ultrasonic fuel-gauging system has several probes each having a transducer mounted at the lower end of a still well. The transducers are connected to a processor, which measures the height of fuel above the transducers within the still wells. The processor also measures the resonant frequency of each transducer and from this calculates fuel density. The system calculates the mass of fuel in the tank from the density and the volume as calculated from the heights.

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Description

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Claims

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