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

Patent Owner(s)

Patent Owner	Address
G D O INC D/B/A GRADIENT TECHNOLOGY	11080 INDUSTRIAL CIRCLE NW ELK RIVER MN 55330

International Classification(s)

• C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF

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• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Goetsch, Duane A	Andover, US	29	306
Hitchingham, Jacqueline R	Anoka, US	7	37
White, Lloyd R	Minneapolis, US	19	269

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Sep 11, 2025

Fee	Large entity fee	small entity fee	micro entity fee
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
March 11, 2014	US,8668753,B2   US8668753B2	GRANTED PATENT AS SECOND PUBLICATION
August 02, 2012	US,20120193581,A1   US20120193581A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8668753

Two stage process for converting biomass to syngas

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