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

Patent Owner(s)

Patent Owner	Address
ANDRITZ OY	HELSINKI
TEKNOLOGIAN TUTKIMUSKESKUS VTT OY	02150 ESPOO
METSÄ FIBRE OY	METSÄ

International Classification(s)

• C08H:DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
• D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
• D21C:PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE ....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Kalliola, Anna	Espoo, FI	4	2
Kemppainen, Katariina	Metsä, FI	3	9
Liitiä, Tiina	Espoo, FI	8	36
Pehu-Lehtonen, Lauri	Helsinki, FI	2	0
Poukka, Outi	Metsä, FI	2	0
Sjögård, Pauliina	Helsinki, FI	1	0
Vehmas, Tapio	Espoo, FI	7	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	Oct 21, 2025
7.5 Year Payment	$3600.00	$1800.00	$900.00	Oct 21, 2029
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Oct 21, 2033

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

Full Text

US Patent Application No: 2022/0120,035

Method for producing oxidized lignin in kraft pulp mill

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