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

Patent Owner(s)

Patent Owner	Address
NATIONAL RESEARCH DEVELOPMENT CORPORATION	NEW DELHI 110 048
MALLADI DRUGS & PHARMACEUTICALS LTD	52 JAWAHARLAL NEHRU ROAD EKKATUTHANGAL CHENNAI-600-097

International Classification(s)

• C12N:MICRO-ORGANISMS OR ENZYMES; COMPOSITIONS THEREOF

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Babu, Sundaramurthy Suresh	Chennai, IN	2	4
# of filed Patents : 2 Total Citations : 4
Mahadevan, Perurmadom Ramaiyer	Andhra Pradesh, IN	2	4
# of filed Patents : 2 Total Citations : 4
Sekar, Subrahmanyam Chivukula	Victoria, AU	1	2
# of filed Patents : 1 Total Citations : 2

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Patent Citation Ranking

• 2 Citation Count
• C12N Class

• 12.47 % this patent is cited more than
• 15 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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 17, 2010	US,7776574,B2   US7776574B2	GRANTED PATENT AS SECOND PUBLICATION
November 24, 2005	US,20050260704,A1   US20050260704A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8420683

5 substituted hydantoins

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Abstract

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The present invention relates to 5-substituted hydantoins, a process for the preparation of 5-substituted hydantoins and the use of 5-substituted hydantoins in the preparation of enantiomerically enriched α-amino acids. Furthermore, the present invention relates to the preparation of pharmaceutically active products such as perindopril and ramipril using the novel 5-substituted hydantoins.

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Description

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Claims

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Claims data not available

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Legal Events

 

• STCH2017
• FP2017
• LAPS2017
• REMI2016
• I2013
• AS2012
• P2010
• AS2010
• F2008
• PD2007

Date	Code	Event	Description
May 15, 2017	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Apr 16, 2017	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Apr 16, 2017
Apr 16, 2017	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES
Nov 25, 2016	REMI	MAINTENANCE FEE REMINDER MAILED
Apr 16, 2013	I	Issuance
May 03, 2012	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DSM IP ASSETS B.V.;REEL/FRAME:028638/0486 Owner name: DSM SINOCHEM PHARMACEUTICALS NETHERLANDS B.V., NET Effective Date: May 03, 2012
Jul 08, 2010	P	Published
Jan 25, 2010	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SARAKINOS, GEORGIOS;BOESTEN, WILHELMUS HUBERTUS JOSEPH;HEEMSKERK, DENNIS;AND OTHERS;SIGNING DATES FROM 20091020 TO 20091130;REEL/FRAME:023837/0588 Owner name: DSM IP ASSETS B.V., NETHERLANDS
Jun 03, 2008	F	Filing
Jun 06, 2007	PD	Priority Date