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Fukuda Co., Ltd.

USPTO Granted Patents = 9

% Expired Patents = 11.1

EPO Patents = 1

Forward Citations = 29

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18 inventors (with patents filed for the assignee):

Mao Hirata (5 out of 5 patents)

Tsutomu Hara (4 out of 41 patents)

Masakazu Ito (2 out of 2 patents)

4. Naoto Izumo (2 out of 2 patents)

5. Masaharu Sugihara (2 out of 2 patents)

6. Takaaki Watanabe (2 out of 3 patents)

7. Akimitsu Tanabe (2 out of 2 patents)

8. Yasuhiko Higuchi (1 out of 1 patent)

9. Yuho Matsui (1 out of 1 patent)

10. Hajime Yoshida (1 out of 4 patents)

11. Satsuo Fukushima (1 out of 1 patent)

12. Yusuke Mochizuki (1 out of 1 patent)

13. Toru Sasaki (1 out of 88 patents)

14. Kenta Arai (1 out of 2 patents)

15. Naohiko Maruno (1 out of 3 patents)

9 patents: Sort by Forward Citations

1. 12504346 - Leak test condition design method, leak test condition design device, leak testing method, and leak testing device (2025-12-23),

2. 12264949 - Gas flow estimation method, hole diameter estimation method, gas flow rate estimation device, and hole diameter estimation device (2025-04-01),

3. 12253436 - Method for leak testing (2025-03-18),

4. 11860065 - Method for leak testing and reference leak device for leak testing (2024-01-02),

5. 11408795 - Sealability evaluation method and the like and standard artificial leak device (2022-08-09),

6. 11248984 - Method for leak testing and reference leak device for leak testing (2022-02-15),

7. 10816434 - Apparatus and method for leak testing (2020-10-27),

8. 9857264 - Leak testing apparatus and method (2018-01-02),

9. 8205484 - Apparatus and method for leak testing (2012-06-26),

Fukuda Co., Ltd. is a leading Japanese construction company that specializes in civil engineering projects. With over 50 years of experience, Fukuda Co., Ltd. has established a strong reputation for delivering high-quality and innovative solutions to clients across the country. The company is known for its commitment to sustainability and safety, and is dedicated to providing top-notch services to meet the evolving needs of its customers.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

Fukuda Co., Ltd.

9 Patents

#2,019 in Tokyo

#4,696 in Japan

Fukuda Co., Ltd.

Forward Citations = 29

18 inventors:

Mao Hirata (5 out of 5 patents)

Tsutomu Hara (4 out of 41 patents)

Masakazu Ito (2 out of 2 patents)

4. Naoto Izumo (2 out of 2 patents)

5. Masaharu Sugihara (2 out of 2 patents)

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