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Kobe Steel, Ltd.

USPTO Granted Patents = 1,887

EPO Patents = 3

Trademarks = 9

Forward Citations = 6,377

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1,961 inventors (with patents filed for the assignee):

Kenji Yamamoto (64 out of 150 patents)

Toshihiro Kugimiya (43 out of 50 patents)

Koji Noishiki (38 out of 42 patents)

4. Eiji Takahashi (37 out of 44 patents)

5. Toru Hashimura (33 out of 36 patents)

6. Kenichi Watanabe (30 out of 31 patents)

7. Toshiki Sato (30 out of 41 patents)

8. Kenji Nagura (30 out of 33 patents)

9. Toshio Murakami (29 out of 29 patents)

10. Reiichi Suzuki (28 out of 29 patents)

11. Aya Miki (27 out of 29 patents)

12. Junichi Nakai (27 out of 38 patents)

13. Masaki Matsukuma (26 out of 27 patents)

14. Shigeto Adachi (26 out of 35 patents)

15. Katsushi Matsumoto (25 out of 27 patents)

Core Competencies:

Arc-Tracking Welding

Gas Treatment Device

Additive Manufacturing

Electric Vehicle Battery Case

Flux-Cored Wire

Machine Learning

High-Strength Steel

Welding Control Device

Metal-Resin Composite

Temperature Control Structure

Reciprocating Compressor

Automotive Structural Member

1,887 patents: Sort by Forward Citations

1. 12504072 - Piston ring, piston ring assembly, and reciprocating compressor (2025-12-23),

2. 12498699 - Machine learning device, additive manufacturing system, machine learning method for welding condition, method for determining welding condition, and a non-transitory computer readable medium (2025-12-16),

3. 12497668 - Hot metal production from DRI with electric arc heating (2025-12-16),

4. 12496649 - Method and device for producing frame structure (2025-12-16),

5. 12485497 - Arc-tracking welding method and welding device (2025-12-02),

6. 12485465 - Overlapped blank and molding method thereof (2025-12-02),

7. 12478917 - Regeneration device, gas treatment device, regeneration method, and gas treatment method (2025-11-25),

8. 12472624 - Spring constant correction device, method therefor, and recording medium (2025-11-18),

9. 12466691 - Kink prevention jig and pail pack (2025-11-11),

10. 12466005 - Solid wire for arc welding use (2025-11-11),

11. 12459048 - Output control method for gas-shielded arc welding, welding system, welding power source, and welding control device (2025-11-04),

12. 12447707 - Pressing device (2025-10-21),

13. 12447700 - Mold, apparatus, and method for producing metal-resin composite (2025-10-21),

14. 12436118 - Measurement system and measurement method (2025-10-07),

15. 12434333 - Flux-cored wire for use with Ar-CO2 mixed gas (2025-10-07),

Kobe Steel, Ltd. is a global company based in Japan, specializing in the production and sale of steel products, aluminum, copper, and other metals. With over a century of experience, Kobe Steel has gained a reputation for its high-quality products and innovative technologies. The company operates in various sectors, including engineering, construction machinery, and industrial machinery. Kobe Steel is committed to sustainability and strives to contribute to a better society through its eco-friendly practices and socially responsible initiatives.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

1,887 Patents

#1 in Hyogo

#122 in Japan

#518 in the World

Kobe Steel, Ltd.

Forward Citations = 6,377

1,961 inventors:

Kenji Yamamoto (64 out of 150 patents)

Toshihiro Kugimiya (43 out of 50 patents)

Koji Noishiki (38 out of 42 patents)

4. Eiji Takahashi (37 out of 44 patents)

5. Toru Hashimura (33 out of 36 patents)

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