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

Patent Owner(s)

Patent Owner	Address
MERCK KGAA	FRANKFURTER STRASSE 250 DARMSTADT 64293

International Classification(s)

• H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
• C07F:ACYCLIC, CARBOCYCLIC, OR HETEROCYCLIC COMPOUNDS CO....
• C07D:HETEROCYCLIC COMPOUNDS
• C07C:ACYCLIC OR CARBOCYCLIC COMPOUNDS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
EHRENREICH, Christian	Darmstadt, DE	74	109
EICKHOFF, Christian	Mannheim, DE	46	68
ENGELHART, Jens	Darmstadt, DE	39	6
KAISER, Jens	Frankfurt am Main, DE	7	209
KROEBER, Jonas	Frankfurt am Main, DE	54	195
PARHAM, Amir	Frankfurt am Main, DE	80	546

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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	Mar 15, 2026
7.5 Year Payment	$3600.00	$1800.00	$900.00	Mar 15, 2030
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Mar 15, 2034

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

Full Text

US Patent Application No: 2022/0289,718

MATERIALS FOR ORGANIC ELECTROLUMINESCENT DEVICES

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