For the Inventor, By the Inventor

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Refine Holdings Co., Ltd.

USPTO Granted Patents = 4

EPO Patents = 1

Trademarks = 5

Forward Citations = 0

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9 inventors (with patents filed for the assignee):

Tomokiyo Takeyama (3 out of 4 patents)

Masaru Nakajo (3 out of 7 patents)

Kensuke Fukasawa (3 out of 3 patents)

4. Takao Suzuki (2 out of 53 patents)

5. Mitsuhiro Iwafune (2 out of 2 patents)

6. Kazuhito Tomizawa (1 out of 3 patents)

7. Fan-Yan Wei (1 out of 1 patent)

8. Makoto Tsuboi (1 out of 1 patent)

9. Kunimitsu Kaya (1 out of 1 patent)

10. Takeyama Tomokiyo (0 patent)

11. Oda Akiyoshi (0 patent)

12. Kawase Yasuhito (0 patent)

13. Kawase Taijun (0 patent)

4 patents: Sort by Forward Citations

1. 12485103 - Insulin secretion-promoting agent and blood sugar level improver using same, diabetes improver, and food (2025-12-02),

2. 12466959 - Method for removing foreign material from carbonaceous material dispersion (2025-11-11),

3. 12249717 - Carbonaceous material dispersion and method for producing thereof (2025-03-11),

4. 12076730 - Method for producing carbon material dispersion, carbon material dispersion, and apparatus therefor (2024-09-03),

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USPTO Data Jan 1 1976 - Dec 30 2025

4 Patents

#17 in Gifu

#7,416 in Japan

Refine Holdings Co., Ltd.

Forward Citations = 0

9 inventors:

Tomokiyo Takeyama (3 out of 4 patents)

Masaru Nakajo (3 out of 7 patents)

Kensuke Fukasawa (3 out of 3 patents)

4. Takao Suzuki (2 out of 53 patents)

5. Mitsuhiro Iwafune (2 out of 2 patents)

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