Inventor
Chang Woo Ha
Inventor
Kyungki-do, KR
Overview
Patents· 20 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H05Bprimary
H05BElectric heating13%
H03KPulse technique9%
Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications9%
G09GArrangements or circuits for control of indicating devices using static means to present variable information7%
H03FAmplifiers7%
G01RMeasuring electric variables4%
G02FOptical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved therein4%
G06FElectric digital data processing4%
G11BInformation storage based on relative movement between record carrier and transducer4%
H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems4%
PatentTitleYear
10,942,799Defective bit line management in connection with a memory access202110,459,316Camera apparatus for vehicle20198,643,587'Field sequential color mode liquid crystal display'20148,207,877'Serial interface, apparatus including the same, and method of using the same'20128,102,193'Current sensing circuit'20128,054,123'Fast differential level shifter and boot strap driver including the same'20118,018,177'Dimming buck type LED driving apparatus'20117,800,566'Drive device of color LED backlight'20107,746,318'Liquid crystal display backlight inverter'20107,741,893'Dual mode clock generator'20107,737,938'Driving circuit for LCD backlight'20107,646,181'Control circuit of DC-DC converter'20107,515,004'Voltage controlled oscillator with duty correction'20097,471,029'Frequency-control-type piezo actuator driving circuit and method of driving the same'20087,417,471'Voltage comparator having hysteresis characteristics'20087,285,922'Driving apparatus for CCFL'20077,271,520'Piezo actuator driving circuit'20077,209,001'Offset compensation circuit for a monitoring photodiode'20077,057,423'Current-voltage transforming circuit employing limiter circuit'20066,864,724'Current to voltage conversion circuit for photo detector integrated circuit employing gain switching circuit'2005Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2005–2011Patents assigned to SAMSUNG ELECTRO MECH (14)· patent assignee history
2005–2014Based in Kyungki-do, KR· patent location history
2007–2009Based in Suwon-si, KR· patent location history
2011–2012Patents assigned to DONGBU HITEK CO LTD (3)· patent assignee history
2011–2012Based in Seongnam-si, KR· patent location history
2012–2014Patents assigned to HA CHANG WOO (2)· patent assignee history
2012Patents assigned to BEA SUNG HOON (1)· patent assignee history
2014Patents assigned to CHEON JEONG IN (1)· patent assignee history
2019Based in Seoul, KR· patent location history
2021Based in San Ramon, CA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| SAMSUNG ELECTRO MECH | 14 | 2005–2011 |
| DONGBU HITEK CO LTD | 3 | 2011–2012 |
| HA CHANG WOOself | 2 | 2012–2014 |
| BEA SUNG HOON | 1 | 2012 |
| CHEON JEONG IN | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Kyungki-do, KR | 10 | 2005–2014 |
| Suwon-si, KR | 5 | 2007–2009 |
| Seongnam-si, KR | 3 | 2011–2012 |
| San Ramon, California, US | 1 | 2021 |
| Seoul, KR | 1 | 2019 |