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Korea Electric Power Corp (KEP)

NYSE: KEP · Electric Services · Naju-Si, KR · filing with the SEC since 1996
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Grade5.4
◀ Past 6.5● Present 4.8▶ Future 5.4
2 est.
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Patents

US patents through Dec 31, 2025 · PatentsView, from the USPTO’s Open Data Portal · read Oct 27, 2026

574 patents granted to the 15 names below, as the owner printed on each patent when it was granted. A later sale, a lapse or an expiry is not read, so this is what was granted to Korea Electric Power Corp’s names, not what it holds today.

Patents granted
574
571 utility, 3 design, 1976 to Dec 31, 2025
Granted in 2025
13
Against 15 in 2024 and 30 in 2023
Applications published
638
28 of them in 2025
Names they are printed under
15
a subsidiary, its own name
By yearGrantedApplications published
'11'12'13'14'15'16'17'18'19'20'21'22'23'24'25
Each pair is one calendar year. Applications are published about eighteen months after filing, so the newest years read low.
What they are aboutgrants since 2021
Engines, pumps, turbines43
Measurement16
Electrical machinery, apparatus, energy10
Materials, metallurgy8
Computer technology8
Mechanical elements7
Environmental technology6
Control5
Machine tools5
Chemical engineering4
Thermal processes and apparatus3
Biotechnology3
The main technology area of each patent, in the World Intellectual Property Organization’s 35 fields.
Under which name15 counted
KOREA HYDRO & NUCLEAR POWER CO., LTD a subsidiary
KR, as the owner printed on each patent. 1 more under the same name are not counted (printed in KP)
225 granted
174 published
KOREA ELECTRIC POWER CORPORATION its own name
KR, as the owner printed on each patent. 2 more under the same name are not counted (printed in NG)
224 granted
104 published
KEPCO NUCLEAR FUEL CO., LTD. a subsidiary
KR, as the owner printed on each patent
68 granted
78 published
KOREA HYDRO & NUCLEAR POWER CO., LTD. a subsidiary
named as the applicant on its applications, in KR
0 granted
119 published
KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC. a subsidiary
KR, as the owner printed on each patent
50 granted
25 published
KOREA ELECTRIC POWER CORPORATION its own name
named as the applicant on its applications, in KR
0 granted
75 published
KEPCO ENGINEERING & CONSTRUCTION COMPANY, INC. a subsidiary
named as the applicant on its applications, in KR
0 granted
41 published
KEPCO NUCLEAR FUEL CO., LTD. a subsidiary
named as the applicant on its applications, in KR
0 granted
13 published
KOREA WESTERN POWER CO., LTD. a subsidiary
KR, as the owner printed on each patent
5 granted
2 published
KOREA SOUTHERN POWER CO., LTD. a subsidiary
KR, as the owner printed on each patent
2 granted
0 published
KOREA WESTERN POWER CO., LTD. a subsidiary
named as the applicant on its applications, in KR
0 granted
2 published
Korea Electric Power Corporation, a Korean Corporation its own name
KR, as the owner printed on each patent
0 granted
2 published
KEPCO KDN Co., Ltd. a subsidiary
named as the applicant on its applications, in KR
0 granted
1 published
Kepco KDN Co., Ltd. a subsidiary
KR, as the owner printed on each patent
0 granted
1 published
Korea Southern Power Co., Ltd. a subsidiary
named as the applicant on its applications, in KR
0 granted
1 published
Names not counted (2)
Korea East-West Power Co., Ltd.
Only generic words.
Korea South-East Power Co., Ltd.
Only generic words.
Newest grantseach row opens the USPTO’s own copy
GrantedPatentTitleFieldOwner as printed
Dec 16, 202512,500,689Communication isolator for cyber security and communication isolation method of the communication isolatorDigital communicationKEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
Dec 9, 202512,494,296Integrated nuclear reactor system including double containment structure using liquid nitrogenEngines, pumps, turbinesKOREA HYDRO & NUCLEAR POWER CO., LTD
Nov 18, 202512,473,660Method of preparing single crystal perovskite and method of manufacturing solar cell using single crystal perovskiteSemiconductorsKOREA ELECTRIC POWER CORPORATION
Oct 7, 202512,437,892Dismantling and decontamination system and method of bioprotective concrete of PWR type nuclear power plantEngines, pumps, turbinesKOREA HYDRO & NUCLEAR POWER CO., LTD
Aug 12, 202512,385,772Water level measurement systemMeasurementKOREA HYDRO & NUCLEAR POWER CO., LTD
Jul 29, 202512,372,568HVDC cable partial discharge diagnosis system and methodMeasurementKOREA ELECTRIC POWER CORPORATION
Jul 22, 202512,364,959Apparatus for removing thermal stratification generated by turbulent penetration by using rotation of pipe wallMechanical elementsKEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
Jul 1, 202512,347,578Device for assembling and disassembling top nozzle of nuclear fuel assemblyEngines, pumps, turbinesKEPCO NUCLEAR FUEL CO., LTD.
Jun 24, 202512,340,912Sintering additive for forming film capable of improving oxidation resistance of nuclear fuel pellets, and preparation method thereforEngines, pumps, turbinesKEPCO NUCLEAR FUEL CO., LTD.
May 6, 202512,292,322Level indicating device for tankMeasurementKEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
Newest applications publishedan application is a clue, never a plan
PublishedApplicationTitleFieldOwner as printed
Dec 11, 20252025/0376776CORE-SHELL STRUCTURE FOR WATER ELECTROLYSIS, PREPARING METHOD OF THE SAME, AND THE ELECTRODE INCLUDING THE SAMESurface technology, coatingKOREA ELECTRIC POWER CORPORATION
Nov 27, 20252025/0364149DISMANTLING AND DECONTAMINATION SYSTEM AND METHOD OF BIOPROTECTIVE CONCRETE OF PWR TYPE NUCLEAR POWER PLANTEngines, pumps, turbinesKOREA HYDRO & NUCLEAR POWER CO., LTD.
Nov 20, 20252025/0357016METHOD AND APPARATUS FOR DISMANTLING NUCLEAR POWER PLANTEngines, pumps, turbinesKOREA HYDRO & NUCLEAR POWER CO., LTD
Nov 13, 20252025/0347551METHOD AND SYSTEM FOR COMPREHENSIVELY DIAGNOSING DEFECT IN ROTATING MACHINEMeasurementKOREA HYDRO & NUCLEAR POWER CO., LTD.
Oct 30, 20252025/0333864ELECTROCATALYST FOR WATER ELECTROLYSIS AND PREPARING METHOD OF THE SAMESurface technology, coatingKOREA ELECTRIC POWER CORPORATION
Aug 28, 20252025/0271400PIPE EVALUATION ROBOT AND PIPE EVALUATION METHODMeasurementKOREA HYDRO & NUCLEAR POWER CO., LTD.
Aug 14, 20252025/0259758IMPROVED NUCLEAR FUEL ASSEMBLY WITH ENHANCED SEISMIC PERFORMANCE AND CONTROL ROD WORTHEngines, pumps, turbinesKEPCO NUCLEAR FUEL CO., LTD.
Jul 31, 20252025/0246324NOISE REDUCTION APPARATUS FOR CONTROL ROD POSITION INDICATORMeasurementKEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
Jun 26, 20252025/0207711PIPING VIBRATION ABSORBER APPARATUS HAVING VIBRATION MONITORING SYSTEMMechanical elementsKEPCO ENGINEERING & CONSTRUCTION COMPANY, INC.
Jun 5, 20252025/0182920METHOD FOR REMOVING DOUSING TANK OF HEAVY WATER REACTOR STRUCTUREEngines, pumps, turbinesKOREA HYDRO & NUCLEAR POWER CO., LTD
What it applied for, 2024 to 2025: Engines, pumps, turbines 23 · Measurement 7 · Computer technology 4 · Environmental technology 3 · Control 3 · Digital communication 2.

A patent is counted where the owner printed on it when it was granted carries the company’s own name, a former name, the name of a subsidiary its annual report lists, or its own name with a patent-holding phrase (Technology Licensing, Intellectual Property and the like), once the legal form, case and punctuation are set aside, and prints a country that name counts in. PatentsView’s data are published under the Creative Commons Attribution 4.0 licence. Source: PatentsView's granted patents and pre-grant publications, disambiguated, from the USPTO's Open Data Portal, through Dec 31, 2025, read Oct 27, 2026.

SI Assistanton KEP · research, not advice