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Nippon Steel & Sumikin Stainless Steel Corporation

USPTO Granted Patents = 67

CIPO Patents = 4

EPO Patents = 65

Trademarks = 2

Forward Citations = 98

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78 inventors (with patents filed for the assignee):

Junichi Hamada (22 out of 42 patents)

Yoshiharu Inoue (16 out of 27 patents)

Eiichiro Ishimaru (13 out of 23 patents)

4. Shinichi Teraoka (12 out of 22 patents)

5. Ken Kimura (12 out of 21 patents)

6. Masaharu Hatano (11 out of 17 patents)

7. Nobuhiko Hiraide (10 out of 13 patents)

8. Akihiko Takahashi (9 out of 20 patents)

9. Hiroshige Inoue (9 out of 34 patents)

10. Norihiro Kanno (8 out of 8 patents)

11. Toshio Tanoue (8 out of 13 patents)

12. Shunji Sakamoto (7 out of 14 patents)

13. Shinji Tsuge (7 out of 10 patents)

14. Haruhiko Kajimura (6 out of 13 patents)

15. Yuusuke Oikawa (6 out of 7 patents)

Core Competencies:

Ferritic Stainless Steel

Austenitic Stainless Steel

Duplex Stainless Steel

Corrosion Resistance

Heat Resistance

Brazability

Automotive Components

Biofuel Supply Systems

Welding Wire

High Purity Stainless Steel

Heat Exchangers

Solar Cell Substrates

67 patents: Sort by Forward Citations

1. 11091824 - Ferritic stainless steel and method for producing same, and heat exchanger equipped with ferritic stainless steel as member (2021-08-17),

2. 10894995 - Austenitic stainless steel sheet for exhaust component having excellent heat resistance and workability, turbocharger component, and method for producing austenitic stainless steel sheet for exhaust component (2021-01-19),

3. 10793930 - Ferritic-austenitic two-phase stainless steel material and method for manufacturing same (2020-10-06),

4. 10752973 - Ferrite-based stainless steel with high resistance to corrosiveness caused by exhaust gas and condensation and high brazing properties and method for manufacturing same (2020-08-25),

5. 10669606 - Stainless steel having excellent brazeability (2020-06-02),

6. 10648053 - Rolled ferritic stainless steel sheet, method for producing the same, and flange part (2020-05-12),

7. 10603712 - Method of increasing thickness of tube and increased thickness tube (2020-03-31),

8. 10544490 - Ferritic stainless steel for fuel cell and method for producing the same (2020-01-28),

9. 10539264 - Inexpensive automobile component and oil feed pipe having excellent salt corrosion resistance (2020-01-21),

10. 10513763 - Ferritic stainless steel plate which has excellent ridging resistance and method of production of same (2019-12-24),

11. 10513747 - Ferritic stainless steel sheet exhibiting small increase in strength after aging heat treatment, and method of producing the same (2019-12-24),

12. 10501819 - High-strength austenitic stainless steel having excellent hydrogen embrittlement resistance characteristics and method for producing same (2019-12-10),

13. 10450623 - Ferritic stainless steel sheet having excellent heat resistance (2019-10-22),

14. 10385429 - Hot-rolled ferritic stainless-steel plate, process for producing same, and steel strip (2019-08-20),

15. 10358707 - Ferritic stainless steel plate which has excellent ridging resistance and method of production of same (2019-07-23),

NIPPON STEEL & SUMIKIN STAINLESS STEEL CORPORATION is a leading stainless steel producer based in Japan. With a rich heritage of over 100 years, the company specializes in manufacturing and distributing high-quality stainless steel products for various industries, including automotive, construction, kitchenware, and electronics. NSSC is committed to delivering innovative solutions and maintaining the highest standards of quality, reliability, and sustainability. For more information, visit their website.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

67 Patents

#601 in Tokyo

#1,415 in Japan

#10,745 in the World

Nippon Steel & Sumikin Stainless Steel Corporation

Forward Citations = 98

78 inventors:

Junichi Hamada (22 out of 42 patents)

Yoshiharu Inoue (16 out of 27 patents)

Eiichiro Ishimaru (13 out of 23 patents)

4. Shinichi Teraoka (12 out of 22 patents)

5. Ken Kimura (12 out of 21 patents)

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