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Dowa Holdings Co., Ltd.

USPTO Granted Patents = 31

EPO Patents = 16

Trademarks = 5

Forward Citations = 24

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77 inventors (with patents filed for the assignee):

Kazuyuki Tohji (5 out of 18 patents)

Hiroyuki Kai (4 out of 11 patents)

Norihiro Shimoi (4 out of 5 patents)

4. Yasumitsu Tanaka (4 out of 4 patents)

5. Daisuke Kodama (3 out of 64 patents)

6. Qiwu Zhang (3 out of 3 patents)

7. Toshihiko Ueyama (3 out of 26 patents)

8. Ryuichi Toba (3 out of 22 patents)

9. Kimitaka Sato (3 out of 28 patents)

10. Meoung-Whan Cho (3 out of 4 patents)

11. Takafumi Yao (3 out of 7 patents)

12. Takayuki Yoshida (2 out of 48 patents)

13. Yasuhiro Watanabe (2 out of 110 patents)

14. Yoshiaki Aiki (2 out of 8 patents)

15. Koji Tanoue (2 out of 11 patents)

31 patents: Sort by Forward Citations

1. 12428310 - Iron-based oxide magnetic powder and method for producing same (2025-09-30),

2. 12349473 - Ultraviolet light receiving device (2025-07-01),

3. 11876030 - Clad material and method for producing same (2024-01-16),

4. 11652204 - Metal negative electrode, method for fabricating the same and secondary battery including the same (2023-05-16),

5. 11309454 - Deep ultraviolet LED and method for producing the same (2022-04-19),

6. 10680245 - Active material composite powder, lithium battery, and method for manufacturing the same (2020-06-09),

7. 10578564 - Method for producing silver nanowires, silver nanowires, and ink using same (2020-03-03),

8. 10391555 - Silver nanowires, method for producing same, and ink (2019-08-27),

9. 10256464 - Method for producing negative electrode active material for lithium ion secondary battery (2019-04-09),

10. 10233099 - Radioactive cesium decontaminator and method of producing the same, and method of removing the radioactive cesium (2019-03-19),

11. 10220441 - Method for producing silver nanowires, silver nanowires, and ink using same (2019-03-05),

12. 10213838 - Silver nanowire production method (2019-02-26),

13. 10044033 - Negative electrode active material for lithium ion secondary battery (2018-08-07),

14. 9761907 - Positive-electrode active-material powder and manufacturing method therefor (2017-09-12),

15. 9761868 - Lithium—transition metal oxide powder and method of producing the same, positive electrode active material for lithium ion battery, and lithium ion secondary battery (2017-09-12),

Dowa Holdings Co., Ltd. is a Japanese company engaged in the metal and environmental businesses. They are involved in the production and sale of non-ferrous metals, electronic materials, metal processing products, and chemicals. Dowa Holdings also focuses on recycling and environmental solutions, including the treatment of industrial byproducts and waste materials. With a commitment to sustainability and innovation, they strive to contribute to a more sustainable and prosperous society.

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

Company Badge

USPTO Data Jan 1 1976 - Jan 6 2026

31 Patents

#909 in Tokyo

#2,216 in Japan

#20,648 in the World

Dowa Holdings Co., Ltd.

Forward Citations = 24

77 inventors:

Kazuyuki Tohji (5 out of 18 patents)

Hiroyuki Kai (4 out of 11 patents)

Norihiro Shimoi (4 out of 5 patents)

4. Yasumitsu Tanaka (4 out of 4 patents)

5. Daisuke Kodama (3 out of 64 patents)

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