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

Patent Owner(s)

Patent Owner	Address
SIGMA-ALDRICH CO LLC	3050 SPRUCE STREET ST LOUIS MO 63103

International Classification(s)

• C07K:PEPTIDES

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Ponnusamy, Ettigounder	St. Louis, US	7	11
# of filed Patents : 7 Total Citations : 11

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Patent Citation Ranking

• 1 Citation Count
• C07K Class

• 15.65 % this patent is cited more than
• 13 Age

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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 Application No: 2012/0123,094

GREENER METHOD FOR THE PRODUCTION OF COPOLYMER 1

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Abstract

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The present invention provides a greener method for the production of polyamino acid random copolymers containing alanine, glutamic acid, lysine and tyrosine. In particular, the present invention provides a greener method for the production of Copolymer 1 or a pharmaceutically acceptable salt thereof via a synthetic route that only requires a single deprotection step.

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Description

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