Inventor
Chul Soon Park
Inventor
Daejeon, KR
Overview
Patents· 36 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H03Fprimary
H03FAmplifiers10%
H01QAntennas, i.e. radio aerials6%
H10DInorganic electric semiconductor devices6%
G02BOptical elements, systems or apparatus5%
H03DDemodulation or transference of modulation from one carrier to another5%
H04BTransmission5%
B82YSpecific uses or applications of nanostructures4%
C07DHeterocyclic compounds4%
H01SDevices using the process of light amplification by stimulated emission of radiation [laser] to amplify or generate light4%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner4%
PatentTitleYear
10,820,434Display apparatus202010,571,093Apparatus for supporting optical reflector202010,564,442Apparatus for driving optical-reflector for OIS with multi-axial structure202010,355,643Differential Colpitts voltage-controlled oscillator201910,267,737Near-infrared fluorescent probe for detecting alkaline phosphatase and manufacturing method thereof201910,261,337Apparatus for driving optical-reflector201910,224,644Series-fed E-shaped patch antenna array with co-polarized parasitic patches20199,728,862'Method and apparatus for beamforming'20179,716,316'Substrate embedded horn antenna having selection capability of vertical and horizontal radiation pattern'20179,630,977'Cephalosporin derivatives and pharmaceutical compositions thereof'20179,407,007'Antenna structure in wireless communication system and operation method thereof'20169,319,256'OOK modulation device and wireless transmitting device including the same'20168,577,308'Beamformer and beamforming method'20138,329,684'Cephalosporin derivatives and pharmaceutical compositions thereof'20128,183,896'Resistive frequency mixing apparatus and signal processing method using the same'20128,022,784'Planar transmission line-to-waveguide transition apparatus having an embedded bent stub'20117,792,215'Direct-conversion receiver and sub-harmonic frequency mixer thereof'20107,692,490'Power amplifying device having linearizer'20107,542,521'Direct-conversion frequency mixer'20097,420,418'Circuit for improving amplification and noise characteristics for MOSFET, and frequency mixer, amplifier and oscillator using the circuit'20087,109,800'Bias circuit for providing a constant bias current to a power amplifier'20067,030,701'Transimpedance amplification apparatus with source follower structure'20067,026,881'Wideband variable frequency voltage controlled oscillator'20067,005,923'Adaptive bias circuit for a power amplifier'20066,914,488'Broadband amplification apparatus for bandwidth expansion'20056,803,822'Power amplifier having a bias current control circuit'20046,744,321'Bias control circuit for power amplifier'20046,406,932'Fabrication of high power semiconductor lasers with ridge waveguide structure'20026,278,720'High power semiconductor lasers with ridge waveguide structure'20016,221,783'Method of manufacturing a heterojunction bipolar transistor'20016,204,102'Method of fabricating compound semiconductor devices using lift-off of insulating film'20016,028,876'High power semiconductor laser device and method for fabricating the same'20005,895,930'Infrared photodetector with doping superlattice structure'19995,693,548'Method for making T-gate of field effect transistor'19975,580,803'Production method for ion-implanted MESFET having self-aligned lightly doped drain structure and T-type gate'19965,405,490'Flat display device and method for manufacturing the same'1995Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1995–2009Patents assigned to KOREA ELECTRONICS TELECOMM (10)· patent assignee history
1995–2019Based in Daejeon, KR· patent location history
2000–2002Patents assigned to KOREA TELECOMMUNICATION (4)· patent assignee history
2001Based in Kumi-shi, KR· patent location history
2004–2006Patents assigned to UNIV INFORMATION & COMM (7)· patent assignee history
2008Based in Yuseong-gu, KR· patent location history
2010–2019Patents assigned to KOREA ADVANCED INST SCI & TECH (9)· patent assignee history
2013–2020Patents assigned to SAMSUNG ELECTRONICS CO LTD (4)· patent assignee history
2013–2020Based in Seoul, KR· patent location history
2019–2020Based in Chungcheongnam-do, KR· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| KOREA ELECTRONICS TELECOMM | 10 | 1995–2009 |
| KOREA ADVANCED INST SCI & TECH | 9 | 2010–2019 |
| UNIV INFORMATION & COMM | 7 | 2004–2006 |
| KOREA TELECOMMUNICATION | 4 | 2000–2002 |
| SAMSUNG ELECTRONICS CO LTD | 4 | 2013–2020 |
Locations
| Location | Patents | Span |
|---|---|---|
| Daejeon, KR | 28 | 1995–2019 |
| Chungcheongnam-do, KR | 3 | 2019–2020 |
| Seoul, KR | 2 | 2013–2020 |
| Yuseong-gu, KR | 1 | 2008 |
| Kumi-shi, KR | 1 | 2001 |