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

Patent Owner(s)

Patent Owner	Address
HITACHI CHEMICAL CO LTD	TOKYO TOKYO METROPOLIS

International Classification(s)

• G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Dobashi, Tomo	Chikusei, JP	1	39
Hoshino, Tetsuya	Tsukuba, JP	24	193
Sugimoto, Yasushi	Tsukuba, JP	47	1049
Teshima, Teruo	Chikusei, JP	7	192

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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
March 02, 2010	US,7672051,B2   US7672051B2	GRANTED PATENT AS SECOND PUBLICATION
March 22, 2007	US,20070064294,A1   US20070064294A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent Application No: 2007/0064,294

Optical film and surface light source using it

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