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Sumitomo Corporation

USPTO Granted Patents = 22

EPO Patents = 5

Trademarks = 19

Forward Citations = 79

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69 inventors (with patents filed for the assignee):

Hironori Kawamura (4 out of 5 patents)

Masanobu Kawata (3 out of 3 patents)

Kohei Mitsuhashi (3 out of 4 patents)

4. Ikuo Moriyama (3 out of 3 patents)

5. Shigeru Matsuo (2 out of 6 patents)

6. Koji Kajiwara (2 out of 3 patents)

7. Yutaka Yamaguchi (2 out of 23 patents)

8. Atsushi Moriya (2 out of 3 patents)

9. Ryo Kawarabuki (2 out of 2 patents)

10. Kenji Sonomoto (2 out of 2 patents)

11. Takahito Ohkubo (2 out of 2 patents)

12. Toshihiro Tanaka (2 out of 2 patents)

13. Nobuyoshi Oike (2 out of 2 patents)

14. Motoo Yoshioka (2 out of 2 patents)

15. Teruyuki Tatsumi (2 out of 3 patents)

22 patents: Sort by Forward Citations

1. 11685597 - Bag material and crushed stone placement method using bag material (2023-06-27),

2. 11332902 - Scour prevention unit and scour prevention method (2022-05-17),

3. 10035710 - Method for producing lithium carbonate (2018-07-31),

4. 9255011 - Method for producing lithium carbonate (2016-02-09),

5. 9234219 - Method for producing L-lactic acid by lactic acid bacterium under presence of pentose and cellooligosaccharides (2016-01-12),

6. 9228569 - Method for constructing a foundation for a wind power generation system (2016-01-05),

7. 8920763 - Method for producing lithium carbonate (2014-12-30),

8. 8853282 - Topical liquid insecticide compositions (2014-10-07),

9. 8850787 - Hybrid thermal power generation system and method of constructing same (2014-10-07),

10. 8657529 - Method for planarizing unevenness of the seabed (2014-02-25),

11. 8420359 - Method of producing butanol (2013-04-16),

12. 7211298 - Electrostatically fiber planted steel sheet and production process therefor (2007-05-01),

13. 7097711 - Electrostatic flocking chamber for forming electrostatic flocking apparatus (2006-08-29),

14. 7069252 - Electronic transaction server, client for seller, client for buyer and electronic transaction method (2006-06-27),

15. 6302922 - Process for manufacturing woven or knit fabrics having excellent shrink and crease resistance and shape stability by using sericin fixed yarns of raw silks and the woven or knit fabrics manufactured by the same process (2001-10-16),

Sumitomo Corporation is one of the largest trading and investment companies in the world. With its business encompassing a wide range of sectors, including metal products, transportation, healthcare, energy, and more, Sumitomo Corporation is committed to contributing to the development of various industries globally. Through its network of offices and subsidiaries, the company strives to provide innovative solutions and create sustainable value for customers and society.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 2 2025

22 Patents

#1,120 in Tokyo

#2,724 in Japan

#27,846 in the World

Sumitomo Corporation

Forward Citations = 79

69 inventors:

Hironori Kawamura (4 out of 5 patents)

Masanobu Kawata (3 out of 3 patents)

Kohei Mitsuhashi (3 out of 4 patents)

4. Ikuo Moriyama (3 out of 3 patents)

5. Shigeru Matsuo (2 out of 6 patents)

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