CIPO Patents = 1

EPO Patents = 3

Forward Citations = 16

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6 inventors (with patents filed for the assignee):

Toshio Takagi (7 out of 11 patents)

Katsumi Kaneko (4 out of 8 patents)

Katsuyuki Murata (4 out of 7 patents)

4. Fumitaka Shiratake (2 out of 2 patents)

5. Jutaro Takagi (1 out of 2 patents)

6. Ryusuke Futamura (1 out of 1 patent)

7. Kaneko Katsumi (0 patent)

8. Murata Katsuyuki (0 patent)

9. Takagi Toshio (0 patent)

10. Futamura Ryusuke (0 patent)

7 patents: Sort by Forward Citations

1. 10626025 - Water-purification cartridge and water purifier (2020-04-21),

2. 10471389 - Method for producing deuterium depleted water, method for separating heavy water and light water, and method for producing deuterium concentrated water (2019-11-12),

3. 10464025 - Method for producing molded filter body (2019-11-05),

4. 10343906 - Method for producing deuterium-depleted water, method for separating heavy water and light water, and method for producing deuterium-enriched water (2019-07-09),

5. 9968890 - Method for producing filter molded article (2018-05-15),

6. 7504033 - Water quality purification cartidge (2009-03-17),

7. 7235176 - Shower head with water purification function (2007-06-26),

Kotobuki Tsushou Co., Ltd. is a leading provider of logistics and transportation services in Japan. With over 50 years of experience, the company offers a wide range of services including warehousing, distribution, freight forwarding, and customs clearance. Kotobuki Tsushou is dedicated to providing high-quality and reliable services to meet the needs of its customers.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

7 Patents

#1 in Kitakyushu-Shi, Fukuoka

#5,302 in Japan

Kitakyushu-Shi, Fukuoka, Japan

Kotobuki Tsushou Co., Ltd.

Forward Citations = 16

6 inventors:

Toshio Takagi (7 out of 11 patents)

Katsumi Kaneko (4 out of 8 patents)

Katsuyuki Murata (4 out of 7 patents)

4. Fumitaka Shiratake (2 out of 2 patents)

5. Jutaro Takagi (1 out of 2 patents)

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1 patent (CIPO):

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3 patents (EPO):

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