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

Patent Owner(s)

Patent Owner	Address
PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION	2 BUSANDAEHAK-RO 63BEON-GIL GEUMJEONG-GU BUSAN 46241 46241
JEONGKWAN CO LTD	330 SUSEO-RO SANGBUK-MYEON YANGSAN-SI GYEONGSANGNAM-DO 50581 50581

International Classification(s)

• G01J:MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTE....
• G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
• G02F:DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF ....

• 2009 Application Filing Year
• G01J Class
• 1212 Applications Filed
• 686 Patents Issued To-Date
• 56.61 % Issued To-Date

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Oh, Min-Cheol	Busan, KR	8	107
# of filed Patents : 8 Total Citations : 107

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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 18, 2025

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 18, 2014	US,8655115,B2   US8655115B2	GRANTED PATENT AS SECOND PUBLICATION
May 17, 2012	US,20120121216,A1   US20120121216A1	FIRST PUBLISHED PATENT APPLICATION

Full Text

US Patent No: 8655115

Integrated polymer optical waveguide current sensor

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Abstract

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Provided is an integrated optical current sensor for measuring the magnitude of current. The integrated optical current sensor is fabricated by integrating optical elements, such as a thermo-optic phase modulator, a waveguide polarizer and an optical coupler, on a single substrate. As compared to the known current sensors using optical fibers, the integrated optical current sensor is more compact and enables measurement of current with higher reliability. Provided also is a method for producing current sensor chips in a large scale by using a process for fabricating integrated optical elements.

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Description

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Claims

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Legal Events

 

• LAPS2018
• STCH2018
• FP2018
• FEPP2017
• I2014
• P2012
• AS2011
• F2009
• PD2009

Date	Code	Event	Description
Mar 19, 2018	LAPS	LAPSE FOR FAILURE TO PAY MAINTENANCE FEES	free format text: PATENT EXPIRED FOR FAILURE TO PAY MAINTENANCE FEES (ORIGINAL EVENT CODE: EXP.)
Mar 19, 2018	STCH	INFORMATION ON STATUS: PATENT DISCONTINUATION	free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362
Feb 18, 2018	FP	LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE	Effective Date: Feb 18, 2018
Oct 02, 2017	FEPP	FEE PAYMENT PROCEDURE	free format text: MAINTENANCE FEE REMINDER MAILED (ORIGINAL EVENT CODE: REM.)
Feb 18, 2014	I	Issuance
May 17, 2012	P	Published
Dec 15, 2011	AS	ASSIGNMENT	free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OH, MIN-CHEOL;REEL/FRAME:027657/0788 Owner name: JEONGKWAN CO., LTD., KOREA, REPUBLIC OF Effective Date: Dec 15, 2011 free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OH, MIN-CHEOL;REEL/FRAME:027657/0788 Owner name: PUSAN NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOP Effective Date: Dec 15, 2011
May 25, 2009	F	Filing
May 25, 2009	PD	Priority Date