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Kajima Corporation

USPTO Granted Patents = 152

% Expired Patents = 7.2

CIPO Patents = 1

EPO Patents = 8

Trademarks = 5

Forward Citations = 2,151

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395 inventors (with patents filed for the assignee):

Takuji Kobori (15 out of 15 patents)

Kuniaki Sato (14 out of 38 patents)

Koji Ishii (12 out of 24 patents)

4. Isao Nishimura (10 out of 34 patents)

5. Mitsuo Sakamoto (9 out of 17 patents)

6. Jun Tagami (9 out of 9 patents)

7. Shigeyuki Akihama (9 out of 10 patents)

8. Nobuyuki Matsui (8 out of 8 patents)

9. Naoki Niwa (7 out of 7 patents)

10. Katsuyasu Sasaki (7 out of 7 patents)

11. Mikio Kobayashi (7 out of 7 patents)

12. Tatsuo Suenaga (7 out of 7 patents)

13. Shigeru Ban (6 out of 9 patents)

14. Toshiyuki Hino (6 out of 11 patents)

15. Mitsuhiro Shibazaki (6 out of 9 patents)

Core Competencies:

Concrete Structures

Seismic Response Control

Vibration Damping

Hydrogen Production

Nanocarbon

Magnetic Shielding

Groundwater Monitoring

Hydraulic Dampers

Building Performance

Pneumatic Transfer

Coral Restoration

Pluripotent Stem Cells

152 patents: Sort by Forward Citations

1. 12699823 - Flow field prediction device, learning device, flow field prediction program, and learning program (2026-08-04),

2. D1119531 - Substrate for coral restoration (2026-03-24),

3. 10370632 - Facility for culturing pluripotent stem cells (2019-08-06),

4. 10184240 - Tank and method for constructing dike (2019-01-22),

5. 9976314 - Method for manufacturing concrete structure, concrete curing sheet for curing concrete (2018-05-22),

6. 9403682 - Method for producing nanocarbon and catalytic reaction device for producing nanocarbon (2016-08-02),

7. 8470406 - Method of spray application, and spray apparatus, for bentonite material (2013-06-25),

8. 8426045 - Internal-resistance measuring device for response-delay type fuel cell (2013-04-23),

9. 8066422 - Material moisture content adjustment method (2011-11-29),

10. 7964803 - Magnetic shield structure having openings and a magnetic material frame therefor (2011-06-21),

11. 7947245 - Method for producing nanocarbon and catalytic reaction device for producing nanocarbon (2011-05-24),

12. 7767182 - Method for producing functional nanocarbon and hydrogen by direct decomposition of lower hydrocarbon (2010-08-03),

13. 7501588 - Magnetic shielding door and magnetic shielding room (2009-03-10),

14. 7493954 - Systems and methods for installation, design and operation of groundwater monitoring systems in boreholes (2009-02-24),

15. 7287934 - Stratum disposal monitoring system (2007-10-30),

Kajima Corporation is a leading Japanese construction company, providing a wide range of services in the fields of construction, engineering, and real estate development. With a history dating back to 1840, Kajima has gained extensive expertise and experience in the construction industry. The company is committed to creating sustainable and innovative solutions, while prioritizing safety, quality, and customer satisfaction. Headquartered in Tokyo, Kajima has expanded its operations globally and is recognized for delivering high-quality projects in various sectors, including residential, commercial, industrial, and infrastructure.

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

Company Badge

USPTO Data Jan 1 1976 - Sep 15 2026

Kajima Corporation

152 Patents

#419 in Tokyo

#843 in Japan

#5,353 in the World

Kajima Corporation

Forward Citations = 2,151

395 inventors:

Takuji Kobori (15 out of 15 patents)

Kuniaki Sato (14 out of 38 patents)

Koji Ishii (12 out of 24 patents)

4. Isao Nishimura (10 out of 34 patents)

5. Mitsuo Sakamoto (9 out of 17 patents)

Please report any incorrect information to [email protected]

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