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

Patent Owner(s)

Patent Owner	Address
E I DU PONT DE NEMOURS AND COMPANY	WILMINGTON DE

International Classification(s)

• D21H:PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED....
• D21F:PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER ....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Amma, Achim	Richmond, US	16	73
Mulcahy, Kevin A	Ashland, US	4	9

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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
May 21, 2013	US,8444815,B2   US8444815B2	GRANTED PATENT AS SECOND PUBLICATION
August 05, 2010	US,20100193143,A1   US20100193143A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8444815

Pulp comprising polypyridobisimidazole and other polymers and methods of making same

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