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

Patent Owner(s)

Patent Owner	Address
HOLMEN AB	114 84 STOCKHOLM

International Classification(s)

• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS
• D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
• C11D:DETERGENT COMPOSITIONS
• B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Letzelter, Philippe	Iggesund, SE	1	1
Lindgren, Johan	Iggesund, SE	5	167

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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	May 15, 2028

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
November 15, 2016	US,9493913,B2   US9493913B2	GRANTED PATENT AS SECOND PUBLICATION
November 12, 2009	US,20090281221,A1   US20090281221A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9493913

Method for stabilizing the whiteness of fluorescent whitening agent(s)(FWA) included in surface-treatment size/coating slip for paper and of surface-treatment layers formed thereof

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