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Nippon Stainless Steel Co., Ltd.

USPTO Granted Patents = 15

Forward Citations = 112

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33 inventors (with patents filed for the assignee):

Hisao Fujikawa (6 out of 9 patents)

Masahiro Aoki (5 out of 5 patents)

Shunichiro Akiyama (4 out of 4 patents)

4. Masao Okubo (4 out of 6 patents)

5. Takeshi Yoshida (4 out of 4 patents)

6. Yoshiaki Shida (3 out of 10 patents)

7. Masayoshi Miki (3 out of 8 patents)

8. Taishi Moroishi (3 out of 8 patents)

9. Masao Koike (3 out of 5 patents)

10. Kiichi Saito (3 out of 3 patents)

11. Masaaki Nagayama (3 out of 3 patents)

12. Nobuyuki Maruyama (2 out of 3 patents)

13. Yuji Shoji (2 out of 2 patents)

14. Naoya Ito (2 out of 2 patents)

15. Junichiro Murayama (2 out of 3 patents)

15 patents: Sort by Forward Citations

1. 5254836 - Method of arc welding with a ferrite stainless steel welding rod (1993-10-19),

2. 5160389 - Flexible tube for automotive exhaust systems (1992-11-03),

3. 5011545 - Method of manufacturing hard-to-work alloy articles such as of (1991-04-30),

4. 4950873 - Sheath heater (1990-08-21),

5. 4742324 - Sheath heater (1988-05-03),

6. 4659397 - Manufacturing process for plate or forging of ferrite-austenite (1987-04-21),

7. 4653684 - Welding material for austenite stainless steel having high Si content (1987-03-31),

8. 4585479 - Welding material of ferrite-austenite two-phase stainless steel and (1986-04-29),

9. 4530720 - High temperature oxidation resistant austenitic steel (1985-07-23),

10. 4484956 - Process for producing heat-resistant ferritic stainless steel sheet (1984-11-27),

11. 4381941 - Method for improving surface defect of specific steel resistant to (1983-05-03),

12. 4374683 - Process for manufacturing ferritic stainless steel sheet having good (1983-02-22),

13. 4360381 - Ferritic stainless steel having good corrosion resistance (1982-11-23),

14. 4279648 - High silicon chromium nickel steel for strong nitric acid (1981-07-21),

15. 4140526 - Ferritic stainless steel having improved weldability and oxidation (1979-02-20),

Nippon Stainless Steel Co., Ltd. is a leading global manufacturer of stainless steel products. With a long history of innovation and quality, the company offers a wide range of stainless steel solutions for various industries including automotive, construction, and energy. Nippon Stainless Steel is committed to sustainability and environmental responsibility in all aspects of its operations.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

15 Patents

#1,345 in Tokyo

#3,363 in Japan

#38,669 in the World

Nippon Stainless Steel Co., Ltd.

Forward Citations = 112

33 inventors:

Hisao Fujikawa (6 out of 9 patents)

Masahiro Aoki (5 out of 5 patents)

Shunichiro Akiyama (4 out of 4 patents)

4. Masao Okubo (4 out of 6 patents)

5. Takeshi Yoshida (4 out of 4 patents)

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