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

Patent Owner(s)

Patent Owner	Address
TUNDRA COMPANIES	1700 BUERKLE ROAD WHITE BEAR LAKE MN 55110

International Classification(s)

• C08J:WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTE....
• B60C:VEHICLE TYRES
• C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
• C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Heikkila, Kurt E	Marine on the St. Croix, US	81	2979
Kroll, John S	Blaine, US	15	172
Williams, Rodney K	Stacy, US	25	565

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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	Mar 26, 2025
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Mar 26, 2029

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
September 26, 2017	US,9771463,B2   US9771463B2	GRANTED PATENT AS SECOND PUBLICATION
April 07, 2016	US,20160096934,A1   US20160096934A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9771463

Reduced density hollow glass microsphere polymer composite

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