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EPO Patents = 3

Forward Citations = 36

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9 inventors (with patents filed for the assignee):

Ryohei Kurosawa (8 out of 8 patents)

Kei Hirai (3 out of 3 patents)

Takeshi Hasui (3 out of 3 patents)

4. Takatsugu Fujikawa (3 out of 3 patents)

5. Shigeru Hyakutake (1 out of 1 patent)

6. Hitoyuki Takagi (1 out of 1 patent)

7. Naoki Matsubara (1 out of 25 patents)

8. Kurosawaa Ryohei (0 patent)

9. Hirai Kei (0 patent)

11 patents: Sort by Forward Citations

1. 11377841 - Junction structure of prestressed concrete (PC) column and steel beam (2022-07-05),

2. 11352790 - Method of introducing prestress to beam-column joint of PC structure in triaxial compression (2022-06-07),

3. 11111664 - Method of introducing prestress to beam-column joint in triaxial compression (2021-09-07),

4. 10378197 - Method for jointing concrete column and iron beam (2019-08-13),

5. 9534411 - Earthquake resisting design method on the basis of PC binding articulation construction method (2017-01-03),

6. 8882944 - Method for forming rustproof film on PC strand and PC strand (2014-11-11),

7. 8833050 - Double rustproof PC strand (2014-09-16),

8. 8191251 - Method for forming rustproof film on a PC strand (2012-06-05),

9. 7585562 - Prestressing strand having corrosion protection double coatings (2009-09-08),

10. 7241473 - Method of forming corrosion protection double coatings on prestressing strand and prestressing strand produced by the method (2007-07-10),

11. 5362326 - Apparatus for forming corrosion protection coatings on prestressing (1994-11-08),

Kurosawa Construction Co., Ltd. is a leading construction company specializing in residential and commercial projects. With over 20 years of experience in the industry, we provide quality construction services and innovative solutions to meet our clients' needs. Our team of skilled professionals is dedicated to delivering projects on time and within budget, ensuring customer satisfaction. Visit our website for more information on our services and projects.

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USPTO Data Jan 1 1976 - Dec 9 2025

11 Patents

#1,591 in Tokyo

#4,039 in Japan

#50,159 in the World

Tokyo, Japan

Kurosawa Construction Co., Ltd.