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For the Inventor, By the Inventor

Daejeon, South Korea

Chang Auck Choi

This inventor holds 35 USPTO granted patents and 2 published patent applications and 1 EPO patent, primarily in Microelectromechanical Systems. Top assignees: Electronics and Telecommunications Research Institute, Gwangju Institute of Science and Technology. Active years: 2000-2018.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Chang Auck Choi. Retrieved from https://idiyas.com/inventor/chang-auck-choi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 35 

% Patents Active = 42.9

 

Average Co-Inventor Count = 4.8

ph-index = 9

Forward Citations = 901(Granted Patents)


Location History:

  • Taejon, KR (2001 - 2002)
  • Daejon-Shi, KR (2000 - 2008)
  • Daejeon-Shi, KR (2006 - 2013)
  • Daejeon, KR (2001 - 2018)

Company Filing History:

goldMedal35 out of 11,777 
 
Electronics and Telecommunications Research Institute
 patents
silverMedal1 out of 497 
 
Gwangju Institute of Science and Technology
 patents
where one patent can have more than one assignee

Years Active: 2000-2018

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Areas of Expertise:
Pressure Sensor
MEMS Microstructure
Optical Filter
Bolometer
Vibration Sensor
Humidity Sensor
Microelectrode
Thermal Management
Capacitance Conversion
Micro Channel Array
Programmable Mask
3D Coil Structure
35 patents (USPTO):Explore Patents
1. 10113928 - Pressure sensor and a method for manufacturing the same (2018-10-30),
2. 8638110 - High resolution circuit for converting capacitance-to-time deviation (2014-01-28),
3. 8613287 - Apparatus for preventing stiction of MEMS microstructure (2013-12-24),
4. RE44356 - Tunable-wavelength optical filter and method of manufacturing the same (2013-07-08),
5. 8359758 - Circuit for calculating a three-dimensional inclination angle (2013-01-29),
6. 8263426 - High-sensitivity z-axis vibration sensor and method of fabricating the same (2012-09-11),
7. 8261617 - Micro piezoresistive pressure sensor and manufacturing method thereof (2012-09-11),
8. 8143579 - Resistive material for bolometer, bolometer for infrared detector using the material, and method of manufacturing the bolometer (2012-03-27),
9. 8047074 - Humidity sensor and method of manufacturing the same (2011-11-01),
10. 7997137 - Bidirectional readout circuit for detecting direction and amplitude of capacitive MEMS accelerometers (2011-08-16),
11. 7975550 - Micromachined sensor for measuring vibration (2011-07-12),
12. 7971633 - Loop type micro heat transport device (2011-07-05),
13. 7948564 - Programmable mask and method of fabricating biomolecule array using the same (2011-05-24),
14. 7928388 - Infrared detection sensor and method of fabricating the same (2011-04-19),
15. 7884328 - Microbolometer with improved mechanical stability and method of manufacturing the same (2011-02-08),

Title: Chang Auck Choi: Innovator in Pressure Sensing Technology

Introduction

Chang Auck Choi is a prominent inventor based in Daejeon, South Korea, known for his significant contributions to the field of pressure sensing technology. With an impressive portfolio of 35 patents, he has made notable advancements in the development of innovative sensing devices.

Latest Patents

Two of his latest patents include a pressure sensor and a method for manufacturing the same. This pressure sensor features a substrate with a cavity, a partition wall surrounding the cavity, and a substrate insulation layer covering the cavity. Notably, a sensing unit is placed on this insulation layer, accompanied by an encapsulation layer covering the sensing unit. This design allows for an efficient sensing mechanism.

Additionally, he developed a high-resolution circuit for converting capacitance-to-time deviation. This circuit comprises a capacitance deviation detecting unit that generates two detection signals with a phase difference, reflecting the variations in capacitance from a micro-electro-mechanical system (MEMS) sensor. The circuit also includes an amplifying unit to enhance the phase difference and a time signal generating unit that produces a time signal with a pulse width corresponding to the amplified phase difference.

Career Highlights

Chang Auck Choi has had a distinguished career, holding key positions at the Electronics and Telecommunications Research Institute. His work there has been pivotal in fostering advancements in telecommunications and electronics, contributing to the ongoing evolution of sensor technology.

Collaborations

Throughout his career, he has collaborated with esteemed colleagues, including Myung Lae Lee and Chi Hoon Jun. These partnerships have facilitated the exchange of ideas and expertise, leading to further innovations in the field.

Conclusion

Chang Auck Choi continues to be an influential figure in the realm of pressure sensing technology, with a strong foundation of patents that reflect his innovative spirit. His inventions have the potential to further revolutionize the industry, influencing future technological advancements.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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