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

Patent Owner(s)

Patent Owner	Address
GRAFTECH INTERNATIONAL HOLDINGS INC	982 KEYNOTE CIRCLE BROOKLYN HEIGHTS OH 44131

International Classification(s)

• C01B:NON-METALLIC ELEMENTS; COMPOUNDS THEREOF
• C10C:WORKING-UP TAR, PITCH, ASPHALT, BITUMEN; PYROLIGNE....
• C10B:DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Chang, Ching-Feng	Strongville, US	22	120
Lewis, Irwin C	Oberlin, US	60	611
Miller, Douglas J	North Olmsted, US	50	393
Shao, Richard L	North Royalton, US	32	146
Tomasek, Aaron	Wooster, US	11	32

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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	Mar 9, 2026

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
September 09, 2014	US,8828348,B2   US8828348B2	GRANTED PATENT AS SECOND PUBLICATION
November 10, 2011	US,20110274136,A1   US20110274136A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8828348

Reduced puffing needle coke from coal tar

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