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

Patent Owner(s)

Patent Owner	Address
DAICEL CHEMICAL INDUSTRIES LTD	OSAKA-SHI OSAKA 530-0001

International Classification(s)

• C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....
• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Arlt, Dieter	Cologne, DE	111	650
Bomer, Bruno	Bergisch Gladbach, DE	37	541
Grosse-Bley, Michael	Cologne, DE	12	91
Grosser, Rolf	Leverkusen, DE	52	373
Lange, Walter	Cologne, DE	29	127

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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

Full Text

US Patent No: 5432252

Optically active sulphur-containing amino acid derivatives, their preparation, their polymerization to give optically active polymers and the use thereof

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