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Daido Steel Co., Ltd.

USPTO Granted Patents = 146

CIPO Patents = 4

EPO Patents = 54

Trademarks = 18

Forward Citations = 436

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269 inventors (with patents filed for the assignee):

Hiroyuki Takabayashi (13 out of 14 patents)

Shigeki Ueta (13 out of 23 patents)

Masamichi Kawano (11 out of 11 patents)

4. Yoshihiko Koyanagi (8 out of 9 patents)

5. Akihiko Saito (7 out of 15 patents)

6. Takahiro Miyazaki (6 out of 20 patents)

7. Toshiyuki Morita (6 out of 10 patents)

8. Kenji Sugiyama (6 out of 6 patents)

9. Yuta Kimura (5 out of 6 patents)

10. Mototsugu Osaki (5 out of 5 patents)

11. Toshiharu Noda (5 out of 26 patents)

12. Michio Okabe (5 out of 21 patents)

13. Keita Hinoshita (4 out of 4 patents)

14. Shinichiro Kato (4 out of 39 patents)

15. Yoshinori Sumi (4 out of 4 patents)

Core Competencies:

Lithium-Ion Batteries

Cobalt-Based Alloys

Additive Manufacturing

Austenitic Stainless Steel

Metal Powders

Sintered Magnets

Electromagnetic Valves

Heat-Resistant Alloys

Carburized Components

Thermal Treatment Furnaces

Steel Molds

Magnetic Materials

146 patents: Sort by Forward Citations

1. 12492457 - Precipitation hardening martensitic stainless steel (2025-12-09),

2. 12444735 - Si alloy powder for negative electrode (2025-10-14),

3. 12438146 - Electrode material for lithium-ion battery and Si alloy composite powder (2025-10-07),

4. 12195828 - Cobalt-based alloy product and method for producing cobalt-based alloy product (2025-01-14),

5. 12194530 - Additive manufacturing powder material and method for manufacturing additive manufacturing powder material (2025-01-14),

6. 12188113 - Austenitic stainless steel and hydrogen resistant member (2025-01-07),

7. 12129557 - High surface-pressure resistant component and production method therefor (2024-10-29),

8. 12104231 - Steel material and steel product using the same (2024-10-01),

9. 11970760 - Metal powder (2024-04-30),

10. 11952640 - Steel for a mold and mold (2024-04-09),

11. 11946124 - Fe-based alloy for melting-solidification shaping and metal powder (2024-04-02),

12. 11913100 - Steel for a mold (2024-02-27),

13. 11884999 - Fe-based alloy for melt-solidification-shaping and metal powder (2024-01-30),

14. 11862787 - Negative electrode active material for lithium-ion battery, negative electrode for lithium-ion battery and lithium-ion battery (2024-01-02),

15. 11846009 - Hard particle powder for sintered body (2023-12-19),

DAIDO STEEL CO., LTD. is a global manufacturer and distributor of specialty steel products. With over 100 years of experience, the company is committed to providing high-quality steel materials for various industries including automotive, energy, aerospace, and industrial machinery. DAIDO STEEL focuses on continuous innovation and technological advancements to meet the ever-changing needs of its customers. For more information about the company and its products, please visit their official website.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

146 Patents

#9 in Nagoya

#850 in Japan

#5,440 in the World

Daido Steel Co., Ltd.

Forward Citations = 436

269 inventors:

Hiroyuki Takabayashi (13 out of 14 patents)

Shigeki Ueta (13 out of 23 patents)

Masamichi Kawano (11 out of 11 patents)

4. Yoshihiko Koyanagi (8 out of 9 patents)

5. Akihiko Saito (7 out of 15 patents)

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