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

Patent Owner(s)

• BAYER AKTIENGESELLSCHAFT; BAYER PHARMA AKTIENGESELLSCHAFT

International Classification(s)

• C07D:HETEROCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Joentgen, Winfried	Cologne, DE	52	651
Lovis, Kai	Düsseldorf, DE	19	29
Platzek, Johannes	Berlin, DE	160	960

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
3.5 Year Payment	$1600.00	$800.00	$400.00	Feb 6, 2028
7.5 Year Payment	$3600.00	$1800.00	$900.00	Feb 6, 2032
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Feb 6, 2036

Fee	Large entity fee	small entity fee	micro entity fee
Surcharge - 3.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 7.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
Surcharge - 11.5 year - Late payment within 6 months	$160.00	$80.00	$40.00
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 06, 2024	US,12054481,B2   US12054481B2	GRANTED PATENT AS SECOND PUBLICATION
June 03, 2021	US,20210163474,A1   US20210163474A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 12054481

Method for the preparation of (4S)-4-(4-cyano-2-methoxyphenyl)-5-ethoxy-2,8-dimethyl-1,4-dihydro-1-6-naphthyridine-3-carbox-amide by racemate separation by means of diastereomeric tartaric acid esters

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