Hiroshima Kasei Ltd

Calculating rank

USPTO Granted Patents = 5

% Expired Patents = 40.0

Forward Citations = 60

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20 inventors (with patents filed for the assignee):

Hisakazu Matsui (2 out of 2 patents)

Yuji Yamamoto (2 out of 2 patents)

Kyozo Watanabe (1 out of 1 patent)

4. Hiroshi Okada (1 out of 7 patents)

5. Shinji Hira (1 out of 1 patent)

6. Kimiaki Nagatome (1 out of 1 patent)

7. Daigo Matsuoka (1 out of 1 patent)

8. Maiko Takebe (1 out of 1 patent)

9. Takahiro Hayama (1 out of 1 patent)

10. Toshinori Harada (1 out of 1 patent)

11. Yuuichi Takagaki (1 out of 1 patent)

12. Hideyuki Shigematsu (1 out of 1 patent)

13. Ryo Ashikawa (1 out of 2 patents)

14. Tatsuo Ishida (1 out of 1 patent)

15. Taizo Kunimura (1 out of 1 patent)

5 patents: Sort by Forward Citations

1. 8267541 - Outdoor illuminating device and illuminating method (2012-09-18),

2. 8038127 - Method for manufacturing a hydrogen-added water and a device for the same (2011-10-18),

3. 5279782 - Method for making weather strips with 'suede appearance' (1994-01-18),

4. 5011875 - Corrosion resistant, water expandable composition (1991-04-30),

5. 4491556 - Process and mold unit for producing carpet mat (1985-01-01),

Company Overview

Hiroshima Kasei Ltd is a leading chemical manufacturer based in Japan. The company specializes in the production of high-quality chemicals for various industries including pharmaceuticals, electronics, and automotive. With a strong focus on innovation and sustainability, Hiroshima Kasei is committed to delivering cutting-edge solutions that meet the evolving needs of its customers.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

5 Patents

#58 in Hiroshima, 729-3431

#6,656 in Japan

Hiroshima, Japan