Inventor
Kwang Uk Chu
Inventor
Daejeon, KR
Overview
Patents· 16 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Bprimary
H04BTransmission19%
H04JMultiplex communication13%
G01JMeasurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet light9%
G02BOptical elements, systems or apparatus6%
H01PWaveguides6%
H03GControl of amplification6%
H04QSelecting6%
H04RLoudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers6%
G01RMeasuring electric variables3%
H01CResistors3%
PatentTitleYear
9,448,270'Pulse injection apparatus'20169,190,722'Antenna line protection device'20158,994,471'Stacked diode limiter'20158,987,610'Vent structure for electromagnetic shielding'20158,693,710'Apparatus for preventing leakage of a weak signal from a speaker'20148,681,467'Surge protection apparatus and method using the same'20147,920,822'Device for preventing eavesdropping through speaker'20117,646,978'Methods and apparatuses to provide a wavelength division-multiplexing passive optical network based on wavelength-locked wavelength-division-multiplexed light sources'20107,593,647'Apparatuses and methods for automatic wavelength locking of an optical transmitter to the wavelength of an injected incoherent light signal'20097,469,102'Wavelength-division-multiplexing passive optical network utilizing fiber fault detectors and/or wavelength tracking components'20087,171,123'Method for decreasing and compensating the transmission loss at a wavelength-division-multiplexed passive optical network and an apparatus therefor'20076,977,731'Method and apparatus for enhancing the resolving power of a tunable optical filter'20056,671,045'Apparatus and method for measuring optical signal-to-noise ratio'20036,396,574'Apparatus for measuring the wavelength, optical power and optical signal-to-noise ratio of each optical signal in wavelength-division multiplexing optical communication'20025,651,080'Optical exchanging apparatus using mode conversion and mode selection in an optical waveguide'19975,574,586'Simultaneous optical compression and decompression apparatus'1996Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1996–2015Patents assigned to KOREA ELECTRONICS TELECOMM (8)· patent assignee history
1996–1997Patents assigned to KOREA TELECOMMUNICATION (2)· patent assignee history
1996–2016Based in Daejeon, KR· patent location history
2002Based in Taejun, KR· patent location history
2003–2007Patents assigned to KOREA ADVANCED INST SCI & TECH (2)· patent assignee history
2003–2010Based in Taejon, KR· patent location history
2005–2010Patents assigned to NOVERA OPTICS INC (4)· patent assignee history
2007Based in Daejon, KR· patent location history
2011–2014Based in Seoul, KR· patent location history
2014–2015Patents assigned to CHU KWANG-UK (2)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOREA ELECTRONICS TELECOMM | 8 | 1996–2015 |
| NOVERA OPTICS INC | 4 | 2005–2010 |
| CHU KWANG-UKself | 2 | 2014–2015 |
| KOREA ADVANCED INST SCI & TECH | 2 | 2003–2007 |
| KOREA TELECOMMUNICATION | 2 | 1996–1997 |
Locations
| Location | Patents | Span |
|---|---|---|
| Daejeon, KR | 7 | 1996–2016 |
| Taejon, KR | 5 | 2003–2010 |
| Seoul, KR | 2 | 2011–2014 |
| Daejon, KR | 1 | 2007 |
| Taejun, KR | 1 | 2002 |