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

Patent Owner(s)

Patent Owner	Address
COVESTRO DEUTSCHLAND AG	KAISER-WILHELM-ALLEE 60 LEVERKUSEN 51373

International Classification(s)

• C09C:TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBRO....
• C08K:USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUB....

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Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Dörr, Sebastian	Düsseldorf, DE	61	250
Nennemann, Arno	Bergisch-Gladbach, DE	23	69
Pyrlik, Oliver	Leverkusen, DE	4	44

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Maintenance Fees

Fee	Large entity fee	small entity fee	micro entity fee	due date
11.5 Year Payment	$7400.00	$3700.00	$1850.00	Sep 11, 2025

Fee	Large entity fee	small entity fee	micro entity fee
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
March 11, 2014	US,8669323,B2   US8669323B2	GRANTED PATENT AS SECOND PUBLICATION
May 05, 2011	US,20110100259,A1   US20110100259A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8669323

Stable polyisocyanates comprising nanoparticles

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