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The Research Institute for Iron, Steel and Other Metals of the Tohoku

USPTO Granted Patents = 20

Forward Citations = 490

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18 inventors (with patents filed for the assignee):

Seishi Yajima (11 out of 33 patents)

Mamoru Omori (8 out of 10 patents)

Josaburo Hayashi (8 out of 11 patents)

4. Toshio Hirai (7 out of 26 patents)

5. Koichi Niihara (6 out of 34 patents)

6. Hideo Kayano (5 out of 7 patents)

7. Masaaki Hamano (4 out of 6 patents)

8. Makoto Saito (1 out of 8 patents)

9. Tsuyoshi Masumoto (1 out of 1 patent)

10. Masaaki Naka (1 out of 1 patent)

11. Toetsu Shishido (1 out of 12 patents)

12. Hideo Toma (1 out of 1 patent)

13. Chiaki Asada (1 out of 3 patents)

14. Hideo Saito (1 out of 1 patent)

15. Kazuaki Fukamichi (1 out of 1 patent)

20 patents: Sort by Forward Citations

1. 4340568 - Super hard highly pure silicon nitrides and a process and apparatus for (1982-07-20),

2. 4312924 - Super hard highly pure silicon nitrides (1982-01-26),

3. 4312923 - Super hard-highly pure silicon nitrides, and a process and apparatus for (1982-01-26),

4. 4312921 - Super hard-highly pure silicon nitrides (1982-01-26),

5. 4279689 - Process for producing super hard-highly pure silicon nitrides (1981-07-21),

6. 4224296 - Super hard-highly pure silicon nitrides, and a process and apparatus for (1980-09-23),

7. 4164528 - Method for producing metal nitride sintered moldings (1979-08-14),

8. 4159259 - Organosilicon high molecular weight compounds (1979-06-26),

9. 4158687 - Method for producing heat-resistant composite materials reinforced with (1979-06-19),

10. 4147538 - Cobalt or cobalt alloy composite materials reinforced with continuous (1979-04-03),

11. 4141726 - Method for producing composite materials consisting of continuous (1979-02-27),

12. 4134759 - Light metal matrix composite materials reinforced with silicon carbide (1979-01-16),

13. 4126242 - Hydrogen-occluding alloy (1978-11-21),

14. 4118539 - Super hard-highly pure silicon nitrides having a preferred crystal face (1978-10-03),

15. 4117057 - Silicon carbide sintered moldings and a method for producing the same (1978-09-26),

The Research Institute for Iron, Steel and Other Metals of the Tohoku University is a leading research institution in Japan focused on advancing the understanding and application of metals, particularly iron and steel. With state-of-the-art facilities and a team of experts, the institute conducts cutting-edge research in metallurgy, materials science, and related fields to drive innovation in the metal industry and contribute to the advancement of society.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

20 Patents

#60 in undefined, undefined

#140 in

#15,846 in US

#30,297 in the World

The Research Institute for Iron, Steel and Other Metals of the Tohoku

Forward Citations = 490

18 inventors:

Seishi Yajima (11 out of 33 patents)

Mamoru Omori (8 out of 10 patents)

Josaburo Hayashi (8 out of 11 patents)

4. Toshio Hirai (7 out of 26 patents)

5. Koichi Niihara (6 out of 34 patents)

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