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Sumikin Coke Company Limited

USPTO Granted Patents = 8

Forward Citations = 52

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17 inventors (with patents filed for the assignee):

Michio Tsuyuguchi (5 out of 5 patents)

Yoshio Kiritani (4 out of 4 patents)

Tetsuo Ibaragi (2 out of 2 patents)

4. Katsuhiro Yano (2 out of 2 patents)

5. Yoshihiko Sunami (2 out of 10 patents)

6. Kunihiko Nishioka (2 out of 5 patents)

7. Takaaki Aiba (2 out of 4 patents)

8. Hiromichi Takahashi (1 out of 22 patents)

9. Ryoichi Takahashi (1 out of 13 patents)

10. Takuji Hosoi (1 out of 7 patents)

11. Hisatsugu Kaji (1 out of 3 patents)

12. Tutomu Konno (1 out of 1 patent)

13. Takao Ishihara (1 out of 4 patents)

14. Tomizo Endo (1 out of 5 patents)

15. Keiji Kubo (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 4674054 - Automatic control method for coke oven working machines and fixed (1987-06-16),

2. 4340464 - Method for thermal cracking of heavy petroleum oil (1982-07-20),

3. 4318779 - Method of manufacture of blast furnace cokes containing substantial (1982-03-09),

4. 4242196 - Mass production system of highly aromatic petroleum pitch (1980-12-30),

5. 4178215 - Method of manufacturing blast furnace coke (1979-12-11),

6. 4135983 - Method for improving coking property of coal for use in production of (1979-01-23),

7. 4100031 - Process for preparing blast furnace cokes (1978-07-11),

8. 4073625 - Process for preparing briquettes (1978-02-14),

Sumikin Coke Company Limited is a leading manufacturer of high-quality coke products for various industrial applications. With a focus on innovation and sustainability, the company is committed to providing environmentally friendly solutions to its customers. Established in 1956, Sumikin Coke has a strong reputation for reliability and excellence in the industry.

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

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USPTO Data Jan 1 1976 - Dec 30 2025

8 Patents

#219 in

#4,916 in Japan

Sumikin Coke Company Limited

Forward Citations = 52

17 inventors:

Michio Tsuyuguchi (5 out of 5 patents)

Yoshio Kiritani (4 out of 4 patents)

Tetsuo Ibaragi (2 out of 2 patents)

4. Katsuhiro Yano (2 out of 2 patents)

5. Yoshihiko Sunami (2 out of 10 patents)

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