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Jfe Steel Corporation

USPTO Granted Patents = 1,800

CIPO Patents = 220

EPO Patents = 1,802

Trademarks = 11

Forward Citations = 2,514

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1,433 inventors (with patents filed for the assignee):

Yoshimasa Funakawa (73 out of 74 patents)

Hiroshi Matsuda (59 out of 94 patents)

Shinjiro Kaneko (57 out of 58 patents)

4. Tatsuya Nakagaito (55 out of 55 patents)

5. Yoshiyasu Kawasaki (53 out of 53 patents)

6. Yoshitsugu Suzuki (53 out of 56 patents)

7. Yoshihiko Oda (50 out of 53 patents)

8. Katsumi Kojima (50 out of 58 patents)

9. Yoshihiko Ono (49 out of 50 patents)

10. Katsutoshi Takashima (49 out of 49 patents)

11. Seiji Okabe (45 out of 52 patents)

12. Masao Yuga (43 out of 43 patents)

13. Rinsei Ikeda (42 out of 42 patents)

14. Takashi Terashima (41 out of 47 patents)

15. Hiroshi Hasegawa (40 out of 112 patents)

Core Competencies:

Grain-Oriented Electrical Steel Sheet

Friction Element Welding

Galvanized Steel Sheet

High Strength Steel Sheet

Electrodeposition-Coated Steel Sheet

Abrasion-Resistant Steel Plate

Non-Oriented Electrical Steel Sheet

Resistance Spot Welding

Steel Pipe Manufacturing

Resin-Coated Metal Sheet

Surface Inspection Device

High Pressure Gas Container

1,800 patents: Sort by Forward Citations

1. 12510443 - Make-up/break-out evaluation method for threaded joint for oil country tubular goods (2025-12-30),

2. 12509752 - Dual-phase stainless steel and dual-phase stainless steel seamless pipe (2025-12-30),

3. 12509743 - Steel sheet, member, and methods for manufacturing the same (2025-12-30),

4. 12509739 - Decarburization end point determination method, decarburization end point determination device, secondary refining operation method for steel making, and method for producing molten steel (2025-12-30),

5. 12498059 - Electric resistance welded steel pipe and method for manufacturing the same (2025-12-16),

6. 12497676 - Stainless steel seamless pipe and method for manufacturing same (2025-12-16),

7. 12497670 - Stainless steel seamless pipe and method for manufacturing stainless steel seamless pipe (2025-12-16),

8. 12492439 - Method for manufacturing molten iron with electric arc furnace (2025-12-09),

9. 12489293 - Guidance device for selecting safety factory, guidance method for selecting safety factory, and method of operating factory (2025-12-02),

10. 12488919 - Method of producing grain-oriented electrical steel sheet (2025-12-02),

11. 12486558 - Steel and method of producing same (2025-12-02),

12. 12486554 - Method of determining final annealing conditions for grain-oriented electrical steel sheet and method of producing grain-oriented electrical steel sheet using method of determining thereof (2025-12-02),

13. 12486089 - Resin-coated metal sheet for container (2025-12-02),

14. 12480177 - Galvanized steel sheet and method for producing same (2025-11-25),

15. 12480176 - Method of manufacturing grain-oriented electrical steel sheet (2025-11-25),

JFE Steel Corporation is a leading steel manufacturer in Japan. With a rich history spanning over 100 years, JFE Steel is known for its high-quality steel products and technology-driven approach. The company is a subsidiary of JFE Holdings and operates across various sectors including automotive, energy, construction, and shipbuilding. JFE Steel is committed to sustainable practices and innovation, aiming to contribute to a better future through its steel solutions.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

1,800 Patents

#62 in Tokyo

#129 in Japan

#548 in the World

Jfe Steel Corporation

Forward Citations = 2,514

1,433 inventors:

Yoshimasa Funakawa (73 out of 74 patents)

Hiroshi Matsuda (59 out of 94 patents)

Shinjiro Kaneko (57 out of 58 patents)

4. Tatsuya Nakagaito (55 out of 55 patents)

5. Yoshiyasu Kawasaki (53 out of 53 patents)

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