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

Patent Owner(s)

Patent Owner	Address
BASF AKTIENGESELLSCHAFT	67056 LUDWIGSHAFEN

International Classification(s)

• C01C:AMMONIA; CYANOGEN; COMPOUNDS THEREOF
• C07D:HETEROCYCLIC COMPOUNDS
• B01D:SEPARATION

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ansmann, Andreas	Wiesloch, DE	34	203
Bassler, Peter	Viernheim, DE	103	868
Fischer, Rolf-Hartmuth	Heidelberg, DE	57	109
Luyken, Hermann	Ludwigshafen, DE	111	1065
Maixner, Stefan	Schwetzingen, DE	21	65
Melder, Johann-Peter	Böhl-Iggelheim, DE	242	1548
Ohlbach, Frank	Dossenheim, DE	28	202

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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
May 24, 2005	US,6896772,B2   US6896772B2	GRANTED PATENT AS SECOND PUBLICATION
July 17, 2003	US,20030132098,A1   US20030132098A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 2003/0132,098

Method for separating ammonia from solutions containing caprolactam and ammonia

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