For the Inventor, By the Inventor

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Kanagawa, Japan

The Tsurumi-Seiki Co., Ltd.

USPTO Granted Patents = 8

EPO Patents = 1

Forward Citations = 33

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20 inventors (with patents filed for the assignee):

Shogo Miyajima (3 out of 4 patents)

Shuji Ueki (3 out of 9 patents)

Hirohumi Doi (3 out of 3 patents)

4. Kenzo Hasegawa (3 out of 3 patents)

5. Hiroshi Satoh (3 out of 6 patents)

6. Kazuhiro Watanabe (2 out of 18 patents)

7. Kazuhiko Endoh (2 out of 2 patents)

8. Satoshi Suyama (2 out of 2 patents)

9. Takashi Ishii (1 out of 33 patents)

10. Nobuyuki Shikama (1 out of 1 patent)

11. Keisuke Mizuno (1 out of 1 patent)

12. Takayasu Oike (1 out of 1 patent)

13. Hirochika Suzuki (1 out of 1 patent)

14. Tateo Adachi (1 out of 1 patent)

15. Jun Shimada (1 out of 1 patent)

8 patents: Sort by Forward Citations

1. 8601969 - Float device (2013-12-10),

2. 7866630 - Winding mechanism with tension control function and trawling apparatus (2011-01-11),

3. 7775383 - Hoisting device with vertical motion compensation function (2010-08-17),

4. 7681748 - Hoisting device with vertical motion compensation function (2010-03-23),

5. D397628 - Probe for measuring an electric conductivity (1998-09-01),

6. 5767682 - Electric conductivity measurement circuit and probe (1998-06-16),

7. 5189909 - Device for measuring properties of underground water and method therefor (1993-03-02),

8. 3967316 - Data recorder (1976-06-29),

Tsurumi-seiki Co., Ltd. is a leading manufacturer of industrial pumps and equipment based in Japan. With over 90 years of experience, they provide high-quality products for various industries such as construction, mining, and wastewater management. Known for their reliability and advanced technology, Tsurumi-seiki Co., Ltd. is trusted by customers worldwide.

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

#161 in Kanagawa

#4,916 in Japan

Kanagawa, Japan

The Tsurumi-Seiki Co., Ltd.

Forward Citations = 33

20 inventors:

Shogo Miyajima (3 out of 4 patents)

Shuji Ueki (3 out of 9 patents)

Hirohumi Doi (3 out of 3 patents)

4. Kenzo Hasegawa (3 out of 3 patents)

5. Hiroshi Satoh (3 out of 6 patents)

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