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Inventor

Won-Chul Song

Inventor
Daejeon, KR

Overview

18→
Patents
1992–2021
Patent span
Electricity
Primary field (CPC H)

Patents· 18 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H03Kprimary
H03KPulse technique26%
G11CStatic stores11%
H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses11%
H03FAmplifiers9%
H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner6%
H03GControl of amplification6%
H03HImpedance networks, e.g. resonant circuits6%
H04LTransmission of digital information, e.g. telegraphic communication6%
F24FAir-conditioning3%
G09GArrangements or circuits for control of indicating devices using static means to present variable information3%
PatentTitleYear
11,002,451Air conditioner20217,180,358'CMOS exponential function generating circuit with temperature compensation technique'20076,400,932'Low offset automatic frequency tuning circuits for continuous-time filter'20026,259,321'CMOS variable gain amplifier and control method therefor'20016,121,818'Mixer using replica voltage-current converter'20006,094,103'Multiple feedback loop ring oscillator and delay cell'20006,091,289'Low pass filter'20006,069,537'Double mode modulator'20006,043,970'High voltage driving circuit reducing a transient current'20006,011,425'CMOS offset trimming circuit and offset generation circuit'20005,886,550'Integrated circuit built-in type supply power delay circuit'19995,886,552'Data retiming circuit'19995,838,895'Fault detection and automatic recovery apparatus or write-read pointers in First-In First-Out'19985,818,306'Voltage control oscillation circuit using CMOS'19985,656,955'Low power output buffer circuit'19975,600,186'Capacitor voltage divider circuit'19975,600,269'Low power consumption comparator circuit'19975,132,568'Tri-state output circuit utilizing a BiCMOS inverter circuit'1992

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1992–2007Patents assigned to KOREA ELECTRONICS TELECOMM (16)· patent assignee history
1992–2000Patents assigned to KOREA TELECOMMUNICATION (6)· patent assignee history
1997–2007Based in Daejeon, KR· patent location history
2000Patents assigned to ELECTRONICS AN TELECOMMUNICATI (1)· patent assignee history
2000Based in Kumi-shi, KR· patent location history
2000Based in Daejon, KR· patent location history
2001–2002Based in Taejon, KR· patent location history
2021Patents assigned to SAMSUNG ELECTRONICS CO LTD (1)· patent assignee history
2021Based in Yongin-si, KR· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees
AssigneePatentsSpan
KOREA ELECTRONICS TELECOMM161992–2007
KOREA TELECOMMUNICATION61992–2000
ELECTRONICS AN TELECOMMUNICATI12000
SAMSUNG ELECTRONICS CO LTD12021
Locations
LocationPatentsSpan
Daejeon, KR111997–2007
Taejon, KR22001–2002
Yongin-si, KR12021
Kumi-shi, KR12000
Daejon, KR12000