Kwang Uk CHU

Person

Seoul, KR

People

Patents Grantslast 30 patents

Information Patent Grant
Pulse injection apparatus
- Patent number 9,448,270
- Issue date Sep 20, 2016
- Electronics and Telecommunications Research Institute
- Up Namkoong
- G01 - MEASURING TESTING
Information Patent Grant
Antenna line protection device
- Patent number 9,190,722
- Issue date Nov 17, 2015
- Electronics and Telecommunications Research Institute
- Seung-Kab Ryu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Stacked diode limiter
- Patent number 8,994,471
- Issue date Mar 31, 2015
- Electronics and Telecommunications Research Institute
- Seung-Kab Ryu
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Vent structure for electromagnetic shielding
- Patent number 8,987,610
- Issue date Mar 24, 2015
- Electronics and Telecommunications Research Institute
- Ui-Jung Kim
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus for preventing leakage of a weak signal from a speaker
- Patent number 8,693,710
- Issue date Apr 8, 2014
- Electronics and Telecommunications Research Institute
- Kwang Uk Chu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Surge protection apparatus and method using the same
- Patent number 8,681,467
- Issue date Mar 25, 2014
- Electronics and Telecommunications Research Institute
- Kwang-Uk Chu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Device for preventing eavesdropping through speaker
- Patent number 7,920,822
- Issue date Apr 5, 2011
- Electronics and Telecommunications Research Institute
- Kwang Uk Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Optical exchanging apparatus using mode conversion and mode selecti...
- Patent number 5,651,080
- Issue date Jul 22, 1997
- Electronics and Telecommunications Research Institute
- Kwang Uk Chu
- G02 - OPTICS
Information Patent Grant
Simultaneous optical compression and decompression apparatus
- Patent number 5,574,586
- Issue date Nov 12, 1996
- Electronics and Telecommunications Research Institute
- Kwang Uk Chu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
ANTENNA LINE PROTECTION DEVICE
- Publication number 20150011121
- Publication date Jan 8, 2015
- ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Seung-Kab RYU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
STACKED DIODE LIMITER
- Publication number 20150002238
- Publication date Jan 1, 2015
- ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Seung-Kab RYU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
COAXIAL CABLE AND CONNECTOR
- Publication number 20150004833
- Publication date Jan 1, 2015
- ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Seung-Kab RYU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
PULSE INJECTION APPARATUS
- Publication number 20150004847
- Publication date Jan 1, 2015
- ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTTE
- Up NAMKOONG
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
WAVEGUIDE FEEDTHROUGH FOR BROADBAND ELECTROMAGNETIC WAVE ATTENUATION
- Publication number 20140328567
- Publication date Nov 6, 2014
- ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Uijung KIM
- G02 - OPTICS
Information Patent Application
VENT STRUCTURE FOR ELECTROMAGNETIC SHIELDING
- Publication number 20130175082
- Publication date Jul 11, 2013
- ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Ui-Jung KIM
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Application
SURGE PROTECTION APPARATUS AND METHOD USING THE SAME
- Publication number 20120268855
- Publication date Oct 25, 2012
- ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
- Kwang-Uk CHU
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
APPARATUS FOR PREVENTING LEAKAGE OF A WEAK SIGNAL FROM A SPEAKER
- Publication number 20100104109
- Publication date Apr 29, 2010
- Kwang Uk CHU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
APPARATUS FOR PREVENTING EAVESDROPPING USING PIEZOELECTRIC FILM
- Publication number 20090267458
- Publication date Oct 29, 2009
- Kwang Uk Chu
- B06 - GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
Information Patent Application
DEVICE FOR PREVENTING EAVESDROPPING THROUGH SPEAKER
- Publication number 20090093211
- Publication date Apr 9, 2009
- Kwang Uk CHU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Kwang Uk CHU

Person

Patents Grantslast 30 patents

Pulse injection apparatus

Antenna line protection device

Stacked diode limiter

Vent structure for electromagnetic shielding

Apparatus for preventing leakage of a weak signal from a speaker

Surge protection apparatus and method using the same

Device for preventing eavesdropping through speaker

Optical exchanging apparatus using mode conversion and mode selecti...

Simultaneous optical compression and decompression apparatus

Patents Applicationslast 30 patents

ANTENNA LINE PROTECTION DEVICE

STACKED DIODE LIMITER

COAXIAL CABLE AND CONNECTOR

PULSE INJECTION APPARATUS

WAVEGUIDE FEEDTHROUGH FOR BROADBAND ELECTROMAGNETIC WAVE ATTENUATION

VENT STRUCTURE FOR ELECTROMAGNETIC SHIELDING

SURGE PROTECTION APPARATUS AND METHOD USING THE SAME

APPARATUS FOR PREVENTING LEAKAGE OF A WEAK SIGNAL FROM A SPEAKER

APPARATUS FOR PREVENTING EAVESDROPPING USING PIEZOELECTRIC FILM

DEVICE FOR PREVENTING EAVESDROPPING THROUGH SPEAKER