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

Patent Owner(s)

Patent Owner	Address
KEMIRA OYJ	ENERGIAKATU 4 HELSINKI FI-00180

International Classification(s)

• C08B:POLYSACCHARIDES; DERIVATIVES THEREOF
• D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
• C08L:COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Lu, Chen	Marietta, US	135	764
Rabideau, Jenna	Rydal, US	3	2

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Apr 30, 2027
7.5 Year Payment	$3600.00	$1800.00	$900.00	Apr 30, 2031
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Apr 30, 2035

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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
October 31, 2023	US,11802376,B2   US11802376B2	GRANTED PATENT AS SECOND PUBLICATION
July 22, 2021	US,20210222368,A1   US20210222368A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 11802376

Paper strength improving additives, their manufacture and use in paper making

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