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

Patent Owner(s)

Patent Owner	Address
K+S AKTIENGESELLSCHAFT	34131 KASSEL

International Classification(s)

• B03C:MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATE....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Beier, Peter-Michael	Heringen , DE	1	2
Deiseroth, Florian	Bebra-weiterode , DE	1	2
Stahl, Ingo	Vellmar , DE	14	82
Vensky, Sascha	Bad Hersfeld , DE	1	2

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date

Fee	Large entity fee	small entity fee	micro entity fee
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
December 22, 2009	US,7635822,B2   US7635822B2	GRANTED PATENT AS SECOND PUBLICATION
February 07, 2008	US,20080029441,A1   US20080029441A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 7635822

Method for treating ground crude potassium salts that contain kieserite

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