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For the Inventor, By the Inventor

Gunpo, South Korea

Kefico Corporation


USPTO Granted Patents = 13

% Expired Patents = 23.1


Forward Citations = 47

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39 inventors (with patents filed for the assignee):

goldMedal Sang-Jo Lee (2 out of 23 patents)

silverMedal Dae-Hyun Yu (2 out of 2 patents)

bronzeMedal Tae-Wook Park (2 out of 2 patents)

4.  Hyun-Ju Park (2 out of 2 patents)

5.  Joo-Young Kim (2 out of 2 patents)

6.  Jung Joo Park (1 out of 8 patents)

7.  Jungjoo Park (1 out of 9 patents)

8.  Hun Cheol Kang (1 out of 1 patent)

9.  Byung Chun Jeon (1 out of 1 patent)

10.  Hu Rak Choi (1 out of 1 patent)

11.  Ji Won Kang (1 out of 1 patent)

12.  Myeong-Hun Kweon (1 out of 1 patent)

13.  Sang-Hoon Jeon (1 out of 1 patent)

14.  Jun-Yong Jung (1 out of 1 patent)

15.  Youngbok Kim (1 out of 1 patent)


13 patents:

1. 9273792 - Solenoid valve with magnet filter (2016-03-01),
2. 9046049 - Apparatus and method for controlling fuel injection in a bi-fuel vehicle running on two fuels, I.E. gasoline and LPG (2015-06-02),
3. 8944031 - Mounting structure for a direct injection fuel rail (2015-02-03),
4. 8775002 - Fail-safety control method for hybrid vehicle (2014-07-08),
5. 8677972 - Intake manifold module for preventing fuel leakage of vehicle and manufacturing method thereof (2014-03-25),
6. 8602009 - Chamber structure for vehicle (2013-12-10),
7. 8552733 - Electrical leak detecting apparatus for an electric vehicle (2013-10-08),
8. 8515634 - Shift control method for automatic transmission in four-wheel drive vehicle (2013-08-20),
9. 8214112 - Engine control method for a vehicle with idle stop function (2012-07-03),
10. 8058877 - Circuit for measuring battery voltage and method for battery voltage measurement using the same (2011-11-15),
11. 8042998 - Method for detecting fault of oil temperature sensor for automatic transmission (2011-10-25),
12. 6142020 - Pressure and temperature sensor assembly for internal combustion engines (2000-11-07),
13. 5987996 - Manifold absolute pressure sensor for internal combustion engines (1999-11-23),
Company Overview
Kefico Corporation, headquartered in Gunpo, South Korea, specializes in the development and manufacturing of advanced automotive electronics and control systems. The company focuses on enhancing vehicle performance and safety through innovative technologies, including engine control units and advanced driver assistance systems. With a commitment to research and development, Kefico aims to lead in the automotive sector by integrating cutting-edge technology and sustainable practices into its products, catering to both domestic and international markets.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 13 2026

Kefico Corporation USPTO Patent Assignee Logo
13 Patents

#2 in Gunpo

#876 in South Korea

#45,039 in the World

Gunpo, KR
Gunpo, South Korea

Kefico Corporation

Forward Citations = 47

39 inventors:

goldMedal Sang-Jo Lee (2 out of 23 patents)

silverMedal Dae-Hyun Yu (2 out of 2 patents)

bronzeMedal Tae-Wook Park (2 out of 2 patents)

4.  Hyun-Ju Park (2 out of 2 patents)

5.  Joo-Young Kim (2 out of 2 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kefico Corporation. Retrieved from https://idiyas.com/company/kefico

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

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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