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Taisei Corporation

USPTO Granted Patents = 81

% Expired Patents = 19.8

EPO Patents = 7

Forward Citations = 643

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206 inventors (with patents filed for the assignee):

Sadao Kobayashi (15 out of 32 patents)

Yoshihide Wakayama (14 out of 18 patents)

Yasuro Ito (14 out of 16 patents)

4. Yasuhiro Yamamoto (10 out of 13 patents)

5. Masayuki Imafuku (9 out of 10 patents)

6. Hideharu Kaga (9 out of 9 patents)

7. Yoshiro Higuchi (8 out of 9 patents)

8. Yoshihiro Tanaka (6 out of 14 patents)

9. Tadayuki Sumita (6 out of 6 patents)

10. Kenji Sugimoto (5 out of 15 patents)

11. Norifumi Yamamoto (4 out of 4 patents)

12. Yuji Saito (4 out of 75 patents)

13. Kouhei Ueda (4 out of 19 patents)

14. Kenji Kuroha (4 out of 4 patents)

15. Mitsutaka Hayakawa (4 out of 5 patents)

Core Competencies:

Biodegradation

Dioxane Treatment

Bacteria Cultures

Air Filtration

Cementitious Materials

Clean Room Technology

Microorganism Detection

Concrete Manufacturing

Tunnel Excavation

Hydraulic Compositions

Reinforced Concrete

Environmental Solutions

81 patents: Sort by Forward Citations

1. 12547176 - Method and system for optimal coverage path planning for autonomous mobile devices (2026-02-10),

2. 12339667 - Autonomous mobile robots for coverage path planning (2025-06-24),

3. 11618699 - Dioxane-degrading bacteria-immobilized carrier, biodegradation treatment method, and biodegradation treatment apparatus (2023-04-04),

4. 11306013 - Biodegradation treatment method for organic compounds (2022-04-19),

5. 10364415 - 1,4-dioxane-degrading bacteria culture method, medium, and 1,4-dioxane treatment method using 1,4-dioxane-degrading bacteria (2019-07-30),

6. 10329631 - Constitutive 1,4-dioxane-degrading bacteria (2019-06-25),

7. 9840633 - Aqueous writing tool for food product packaging material (2017-12-12),

8. 9145337 - Fiber reinforced cement based mixed material (2015-09-29),

9. 9115026 - Cementitious matrix and fiber reinforced cement based mixture (2015-08-25),

10. 8852337 - Fiber reinforced cement based mixed material (2014-10-07),

11. 8137453 - Fiber reinforced concrete and method of manufacturing fiber reinforced concrete member (2012-03-20),

12. 7846239 - Automatic four-port selector valve (2010-12-07),

13. 7823356 - Shearing force reinforced structure and member (2010-11-02),

14. 7640864 - Non-magnetic concrete structure, a sidewall for a guideway and a method for installing such a sidewall for the guideway (2010-01-05),

15. 7420118 - Electric wire and cable with coating/covering of polyvinyl chloride family resin composition (2008-09-02),

Taisei Corporation, headquartered in Tokyo, specializes in biodegradation technology, focusing on innovative solutions for environmental sustainability. The company develops advanced methods for dioxane treatment and employs specialized bacteria cultures to enhance biodegradation processes. Additionally, Taisei is involved in air filtration systems, cementitious materials, and clean room technology, contributing to various sectors including construction and environmental management. Their expertise extends to microorganism detection and concrete manufacturing, positioning them as a leader in eco-friendly technologies.

Profile summary based on public USPTO records.

Company Badge

USPTO Data Jan 1 1976 - Sep 29 2026

Taisei Corporation

81 Patents

#619 in Tokyo

#1,289 in Japan

#9,343 in the World

Taisei Corporation

Forward Citations = 643

206 inventors:

Sadao Kobayashi (15 out of 32 patents)

Yoshihide Wakayama (14 out of 18 patents)

Yasuro Ito (14 out of 16 patents)

4. Yasuhiro Yamamoto (10 out of 13 patents)

5. Masayuki Imafuku (9 out of 10 patents)

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