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

Patent Owner(s)

Patent Owner	Address
FENWAL CONTROLS OF JAPAN LTD	KYOHAN KUDAN BLDG 5-10 IIDABASHI 1-CHOME CHIYODA-KU TOKYO 102-0072

International Classification(s)

• G08B:SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; A....
• G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Iguchi, Masao	Tokyo, JP	69	741
Ookawa, Takuya	Tokyo, JP	3	8
Shibuya, Tadayuki	Tokyo, JP	4	34

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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 29, 2027

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 29, 2016	US,9297753,B2   US9297753B2	GRANTED PATENT AS SECOND PUBLICATION
May 28, 2015	US,20150146204,A1   US20150146204A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9297753

Photoelectric smoke sensor

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