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Ohbayashi-Gumi, Ltd.

USPTO Granted Patents = 12

Forward Citations = 262

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38 inventors (with patents filed for the assignee):

Toru Aoyagi (3 out of 11 patents)

Toshio Adachi (2 out of 2 patents)

Shigeki Yamanaka (2 out of 2 patents)

4. Yukio Kida (2 out of 2 patents)

5. Takeshi Kawachi (1 out of 3 patents)

6. Hideki Yamaguchi (1 out of 57 patents)

7. Yoshimasa Hayashi (1 out of 5 patents)

8. Tsuyoshi Aoyama (1 out of 6 patents)

9. Jiro Saito (1 out of 1 patent)

10. Kaoru Kimura (1 out of 1 patent)

11. Kazuyoshi Nakaguma (1 out of 1 patent)

12. Hiroshi Kusuhara (1 out of 1 patent)

13. Hirotaka Toba (1 out of 3 patents)

14. Toshio Fujiwara (1 out of 1 patent)

15. Junji Sakimoto (1 out of 1 patent)

12 patents: Sort by Forward Citations

1. 4751800 - Openable dome-shaped roof structure (1988-06-21),

2. 4727688 - Retractable roof structure (1988-03-01),

3. 4715726 - Method of measuring the strength of concrete for slip form process (1987-12-29),

4. 4706419 - Openable dome-shaped roof structure (1987-11-17),

5. 4653674 - Device for dispensing goods through annular dispensing port (1987-03-31),

6. 4565039 - Floor structure for reducing vibration (1986-01-21),

7. 4551256 - Slurry excavating method (1985-11-05),

8. 4361254 - Hopper for storing free flowing solid material (1982-11-30),

9. 4266885 - Method of constructing a continuous cut-off wall and a core of a (1981-05-12),

10. 4209268 - Tail packing for a slurry pressurized shield (1980-06-24),

11. 4205040 - Exposed aggregate finishing method for concrete (1980-05-27),

12. 3965686 - Drain sheet material (1976-06-29),

Ohbayashi-gumi, Ltd. is a leading construction company based in Japan. With a history spanning over a century, they specialize in various construction projects including residential buildings, infrastructure, and commercial facilities. Their commitment to quality, safety, and innovation has earned them a reputation as one of the most trusted names in the industry.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 30 2025

12 Patents

#365 in Osaka

#3,838 in Japan

#46,724 in the World

Ohbayashi-Gumi, Ltd.

Forward Citations = 262

38 inventors:

Toru Aoyagi (3 out of 11 patents)

Toshio Adachi (2 out of 2 patents)

Shigeki Yamanaka (2 out of 2 patents)

4. Yukio Kida (2 out of 2 patents)

5. Takeshi Kawachi (1 out of 3 patents)

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