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

Patent Owner(s)

Patent Owner	Address
DHAR BAL MAKUND	Not Provided

International Classification(s)

• F21V:FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES....
• F24J:PRODUCTION OR USE OF HEAT NOT OTHERWISE PROVIDED F....
• G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS

• [Classification Symbol]

• [Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Dhar, Bal Makund	Gaithersburg, US	3	24

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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	Aug 21, 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
February 21, 2017	US,9575244,B2   US9575244B2	GRANTED PATENT AS SECOND PUBLICATION
April 16, 2015	US,20150101652,A1   US20150101652A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 9575244

Light guide apparatus and fabrication method thereof

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