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

Patent Owner(s)

Patent Owner	Address
YAMAMOTO KOGAKU CO LTD	OSAKA 577-0056

International Classification(s)

• G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
• G02C:SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY ....
• G02F:DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF ....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Kobuchi, Nobuyuki	Higashiosaka, JP	7	92
Oka, Koichiro	Higashiosaka, JP	26	455
Yoshikawa, Keishi	Higashiosaka, JP	6	113

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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	May 29, 2028

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
November 29, 2016	US,9507176,B2   US9507176B2	GRANTED PATENT AS SECOND PUBLICATION
October 04, 2012	US,20120250142,A1   US20120250142A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9507176

Polarization optical article in which uneven coloring by polarization color has been improved

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