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

Patent Owner(s)

Patent Owner	Address
SUNDSTRAND CORPORATION	4949 HARRISON AVENUE ROCKFORD IL 61125

International Classification(s)

• H02P:CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATO....

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Heglund, William S	Davis Junction, IL	21	200
# of filed Patents : 21 Total Citations : 200

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Patent Citation Ranking

• 14 Citation Count
• H02P Class

• 51.88 % this patent is cited more than
• 23 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: 6359412

Commutation apparatus and method for a four state sensorless switched reluctance machine system utilizing machine winding current sensing

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Abstract

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A control for operating an inverter coupled to a switched reluctance machine is responsive to the magnitudes of current flowing in the phase windings of the machines and controls switches in legs of the inverter based upon such magnitude.

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Description

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