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Sekisui Kasei Co., Ltd.

USPTO Granted Patents = 18

CIPO Patents = 2

EPO Patents = 12

Trademarks = 1

Forward Citations = 2

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48 inventors (with patents filed for the assignee):

Ryosuke Harada (3 out of 14 patents)

Kengo Nishiumi (2 out of 2 patents)

Yuichi Gondoh (2 out of 6 patents)

4. Hirotaka Kondo (2 out of 3 patents)

5. Haruhiko Matsuura (2 out of 2 patents)

6. Shota Endo (2 out of 2 patents)

7. Eiji Fukuyama (2 out of 2 patents)

8. Ayano Mori (2 out of 2 patents)

9. Koichiro Okamoto (2 out of 2 patents)

10. Takahiko Fujita (1 out of 6 patents)

11. Ryo Iizuka (1 out of 4 patents)

12. Eiji Tokunaga (1 out of 1 patent)

13. Keisuke Seto (1 out of 1 patent)

14. Sou Aizawa (1 out of 1 patent)

15. Akiyoshi Kusaka (1 out of 9 patents)

18 patents: Sort by Forward Citations

1. 12473390 - Hydrogel sheet (2025-11-18),

2. 12415895 - Hydrogel and uses therefor (2025-09-16),

3. 12325766 - Fine resin particles and method for producing the same (2025-06-10),

4. 12305014 - Expanded particles and expanded molded article (2025-05-20),

5. 12284755 - Laminate, laminate with buildup layer, laminate with metal foil, and circuit board (2025-04-21),

6. 12187886 - Hydrogel (2025-01-07),

7. 12104041 - Biodegradable resin particles and external preparation including the same (2024-10-01),

8. 12091524 - Method for producing biodegradable resin expanded sheet (2024-09-17),

9. 12031017 - Hollow resin particle and method for producing same (2024-07-09),

10. 11981787 - Laminated foam sheet (2024-05-14),

11. 11883790 - Hollow particles, method for producing same, and usage of same (2024-01-30),

12. 11834564 - Molded foam of ester-based elastomer, uses thereof, and expanded beads of ester-based elastomer (2023-12-05),

13. 11396566 - Fluorescent resin particles and use thereof (2022-07-26),

14. 11332572 - Spherical polyester resin particles and method for producing same (2022-05-17),

15. 11111346 - Metal-coated non-spherical resin particles and method for producing same, aligned film of metal-coated non-spherical resin particles and method for producing same, particles, and method for producing particle-aligned film (2021-09-07),

Sekisui Kasei Co., Ltd. is a leading Japanese company specializing in the manufacturing of chemicals, plastics, and housing materials. With a focus on innovation and sustainability, Sekisui Kasei is dedicated to providing high-quality products and solutions to meet the diverse needs of its customers. The company's extensive product portfolio includes resins, adhesive films, and construction materials, among others. Visit their website to learn more about Sekisui Kasei's commitment to excellence and environmental stewardship.

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

Company Badge

USPTO Data Jan 1 1976 - Dec 16 2025

18 Patents

#295 in Osaka

#3,053 in Japan

#33,170 in the World

Sekisui Kasei Co., Ltd.

Forward Citations = 2

48 inventors:

Ryosuke Harada (3 out of 14 patents)

Kengo Nishiumi (2 out of 2 patents)

Yuichi Gondoh (2 out of 6 patents)

4. Hirotaka Kondo (2 out of 3 patents)

5. Haruhiko Matsuura (2 out of 2 patents)

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