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

Patent Owner(s)

Patent Owner	Address
PIESTERT OLIVER	38640 GOSLAR

International Classification(s)

• C03C:CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREO....
• C03B:MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR ....

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• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
PIESTERT, Oliver	Goslar, DE	9	12

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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	May 3, 2026
7.5 Year Payment	$3600.00	$1800.00	$900.00	May 3, 2030
11.5 Year Payment	$7400.00	$3700.00	$1850.00	May 3, 2034

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

Full Text

US Patent Application No: 2022/0348,493

METHOD FOR REMOVING DISTURBING METALS FROM GLASS

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