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

Patent Owner(s)

Patent Owner	Address
METSO FINLAND OY	RAUHALANPUISTO 9 ESPOO 02230

International Classification(s)

• C22B:PRODUCTION OR REFINING OF METALS
• C01F:COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUM....
• C01D:COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, ....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
HIRSI, Tuomas	Espoo, FI	9	114
ISOMAKI, Niko	Espoo, FI	4	1
TIIHONEN, Marika	Espoo, FI	12	25

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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	Jun 12, 2028
7.5 Year Payment	$3600.00	$1800.00	$900.00	Jun 12, 2032
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Jun 12, 2036

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Surcharge after expiration - Late payment is unintentional	$1,640.00	$820.00	$410.00

Full Text

US Patent Application No: 2024/0410,031

Solution Circulations in a Process for Calcination and Leaching of a Lithium-Containing Mineral

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