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Kurashiki, Japan

Kuraray Co., Ltd.

USPTO Granted Patents = 1,872

% Expired Patents = 13.1

CIPO Patents = 57

EPO Patents = 740

Trademarks = 85

Forward Citations = 16,004

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1,860 inventors (with patents filed for the assignee):

Hideharu Iwasaki (48 out of 53 patents)

Toshiaki Sato (43 out of 44 patents)

Takashi Nishida (43 out of 44 patents)

4. Yoshin Tamai (38 out of 38 patents)

5. Naoki Fujiwara (36 out of 119 patents)

6. Yoshiji Fujita (36 out of 37 patents)

7. Takuji Okaya (33 out of 34 patents)

8. Kaoru Ikeda (31 out of 31 patents)

9. Takashi Fukumoto (30 out of 30 patents)

10. Shinji Tai (29 out of 29 patents)

11. Manzo Shiono (29 out of 30 patents)

12. Masato Nakamae (28 out of 28 patents)

13. Kazushige Ishiura (28 out of 29 patents)

14. Noriaki Yoshimura (27 out of 27 patents)

15. Hiroshi Kawai (26 out of 27 patents)

Core Competencies:

Polyamide Resin

Water-Soluble Film

Gas Barrier Resin

Thermoplastic Elastomer

Composite Fiber

Hydrogel Composition

Plastic Scintillating Fiber

Electrochemical Device

Polishing Pad

Leather-Like Sheet

Adsorbent

Hydraulic Composition

1,872 patents: Sort by Forward Citations

1. 12534597 - Polyamide resin composition and molded object thereof (2026-01-27),

2. 12534556 - Curable composition, cured article using same, and method for producing cured article (2026-01-27),

3. 12522956 - Bundled yarn, hydraulic composition and molded body (2026-01-13),

4. 12509560 - Resin pellet group and lamination structure using the same (2025-12-30),

5. 12508801 - Colored resin sheet and leather-like sheet (2025-12-30),

6. 12503794 - Sea-island composite fiber (2025-12-23),

7. 12492272 - Modified vinyl alcohol polymer, aqueous solution, and method for producing modified vinyl alcohol polymer (2025-12-09),

8. 12466925 - Water-soluble film, method of manufacturing same, and package (2025-11-11),

9. 12460111 - Reinforcing fibers and production method therefor, and molded article using same (2025-11-04),

10. 12460074 - Gas barrier resin composition, method for producing gas barrier resin composition, and molded product (2025-11-04),

11. 12442115 - High surface area braids (2025-10-14),

12. 12441914 - Aqueous emulsion and adhesive using same (2025-10-14),

13. 12441878 - Thermoplastic elastomer composition, laminate structure and method for producing said laminate structure (2025-10-14),

14. 12435212 - Resin composition and molded body (2025-10-07),

15. 12435195 - Surface-modified fibers, reinforcing fibers, and molded article using same (2025-10-07),

Company Overview

Kuraray Co., Ltd., headquartered in Kurashiki, Japan, is a leader in polymer technology, specializing in the development and manufacturing of advanced materials. The company focuses on a diverse range of core technologies, including polyamide resin, water-soluble films, and gas barrier resins. Kuraray also excels in thermoplastic elastomers, composite fibers, hydrogel compositions, and plastic scintillating fibers, contributing to various industries such as electronics, healthcare, and packaging. Its innovative electrochemical devices further enhance its technological portfolio.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 20 2026

1,872 Patents

#1 in Kurashiki

#129 in Japan

#537 in the World

Kurashiki, Japan

Kuraray Co., Ltd.

Forward Citations = 16,004

1,860 inventors:

Hideharu Iwasaki (48 out of 53 patents)

Toshiaki Sato (43 out of 44 patents)

Takashi Nishida (43 out of 44 patents)

4. Yoshin Tamai (38 out of 38 patents)

5. Naoki Fujiwara (36 out of 119 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Kuraray Co., Ltd.. Retrieved from https://idiyas.com/company/kuraray-company

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]

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