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Nippon Kodoshi Corporation

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USPTO Granted Patents = 33

% Expired Patents = 15.2

CIPO Patents = 3

EPO Patents = 12

Trademarks = 1

Forward Citations = 248

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43 inventors (with patents filed for the assignee):

Atsushi Igawa (12 out of 12 patents)

Norihiro Wada (11 out of 12 patents)

Haruo Sawa (7 out of 8 patents)

4. Takumi Ichimura (6 out of 7 patents)

5. Masahiro Kuroiwa (4 out of 4 patents)

6. Naoki Fujimoto (4 out of 4 patents)

7. Masahiko Ueta (4 out of 5 patents)

8. Gaku Matsuoka (4 out of 5 patents)

9. Kosuke Tanaka (4 out of 4 patents)

10. Shigeru Okada (3 out of 3 patents)

11. Katsutoshi Rokuta (3 out of 3 patents)

12. Kentaro Ogawa (2 out of 2 patents)

13. Naoya Kawazawa (2 out of 2 patents)

14. Pierluigi Barbaro (2 out of 3 patents)

15. Claudio Bianchini (2 out of 2 patents)

Core Competencies:

Separator

Alkaline Battery

Electrochemical Element

Solid Electrolyte

Electrolytic Capacitor

Power Storage Device

Ionic Conductivity

Hybrid Catalytic Materials

Water Content Detection

Porous Paper

Non-Aqueous Electrolyte

33 patents: Sort by Forward Citations

1. 12785156 - Lithium ion secondary battery support using solid electrolyte, and lithium ion secondary battery using said support (2026-11-03),

2. 12456781 - Separator for alkaline batteries, and alkaline battery (2025-10-28),

3. 12308168 - Separator for electrochemical elements, and electrochemical element (2025-05-20),

4. 11742148 - Separator for aluminum electrolytic capacitor, and aluminum electrolytic capacitor (2023-08-29),

5. 11588207 - Separator for electrochemical element and electrochemical element (2023-02-21),

6. 11538639 - Separator for electrochemical elements, and electrochemical element (2022-12-27),

7. 11177535 - Separator and non-aqueous electrolyte battery (2021-11-16),

8. 11094475 - Separator for electrochemical element and electrochemical element (2021-08-17),

9. 11063319 - Separator for electrochemical element and electrochemical element (2021-07-13),

10. 10964485 - Separator for aluminum electrolytic capacitors, and aluminum electrolytic capacitor (2021-03-30),

11. 10892456 - Separator for electrochemical element, electrochemical element, automobile, and electronic device (2021-01-12),

12. 10804517 - Alkaline battery separator and alkaline battery (2020-10-13),

13. 10748713 - Separator for electrochemical device and electrochemical device (2020-08-18),

14. 10566141 - Separator and aluminum electrolytic capacitor (2020-02-18),

15. 10508389 - Separator for electrochemical element and electrochemical element (2019-12-17),

Company Overview

Nippon Kodoshi Corporation, headquartered in Kochi, Japan, specializes in the development and manufacturing of advanced materials and components for various industries. The company focuses on innovative solutions in the fields of electronics, automotive, and industrial applications, leveraging cutting-edge technology to enhance product performance and reliability. With a commitment to research and development, Nippon Kodoshi aims to meet the evolving needs of its global clientele while contributing to advancements in material science.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 10 2026

33 Patents

#2 in Kochi

#2,204 in Japan

#20,211 in the World

Nippon Kodoshi Corporation

Forward Citations = 248

43 inventors:

Atsushi Igawa (12 out of 12 patents)

Norihiro Wada (11 out of 12 patents)

Haruo Sawa (7 out of 8 patents)

4. Takumi Ichimura (6 out of 7 patents)

5. Masahiro Kuroiwa (4 out of 4 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Nippon Kodoshi Corporation. Retrieved from https://idiyas.com/company/nippon-kodoshi

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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