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

Patent Owner(s)

Patent Owner	Address
BLANKOPHOR GMBH & CO KG	49577 ANKUM

International Classification(s)

• D21F:PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER ....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hafermann, Marco	Bergisch Gladbach, DE	2	1
Hunke, Bernhard	Hennef, DE	13	33
Klug, Guenter	Langenfeld, DE	3	2
Kraemer, Michael	Kuerten, DE	51	817
Lansing, Theo	Leverkusen, DE	2	1
Tauber, Andrei	Cologne, DE	10	17

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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	Oct 15, 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
April 15, 2014	US,8696867,B2   US8696867B2	GRANTED PATENT AS SECOND PUBLICATION
August 23, 2012	US,20120211188,A1   US20120211188A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8696867

Disulfo-type fluorescent whitening agents

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