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

Patent Owner(s)

Patent Owner	Address
CEREVAST THERAPEUTICS INC	12277 134TH CT NE SUITE 202 REDMOND WA 98052-2431

International Classification(s)

• A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....
• A61B:DIAGNOSIS; SURGERY; IDENTIFICATION

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Unger, Evan C	Tucson, AZ	185	13278

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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: 6315981

Gas filled microspheres as magnetic resonance imaging contrast agents

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