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

Patent Owner(s)

Patent Owner	Address
OXENO OLEFINCHEMIE GMBH	45764 MARL

International Classification(s)

• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS
• B01D:SEPARATION

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Bueschken, Wilfried	Haltern, DE	55	708
Esser, Peter Ernst	Aschheim, DE	4	62
Kerker, Lothar	Duelmen, DE	6	66
Kuppinger, Franz-Felix	Marl, DE	23	483
Steinbeisser, Hartmut	Marl, DE	1	5
Werninger, Claus York	Itzehoe, DE	1	5

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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
March 08, 2005	US,6864388,B2   US6864388B2	GRANTED PATENT AS SECOND PUBLICATION
April 17, 2003	US,20030070928,A1   US20030070928A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 6864388

Process for preparing salts of methallylsulfonic acid

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