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Rubycon Corporation

USPTO Granted Patents = 36

% Expired Patents = 13.9

EPO Patents = 6

Trademarks = 2

Forward Citations = 105

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39 inventors (with patents filed for the assignee):

Akihiko Komatsu (15 out of 15 patents)

Yoshishige Sakurai (11 out of 11 patents)

Tetsushi Ogawara (9 out of 9 patents)

4. Tomonao Kako (8 out of 8 patents)

5. Yosuke Nozawa (6 out of 6 patents)

6. Shigeru Uzawa (6 out of 6 patents)

7. Akira Iijima (4 out of 4 patents)

8. Masayuki Sakaguchi (4 out of 4 patents)

9. Taketo Matsuzawa (4 out of 4 patents)

10. Hayato Karasawa (3 out of 3 patents)

11. Hiroki Tsutsui (3 out of 3 patents)

12. Chiharu Ito (3 out of 3 patents)

13. Takashi Nozawa (3 out of 3 patents)

14. Takuya Miyahara (2 out of 2 patents)

15. Tetsuo Shiba (2 out of 2 patents)

Core Competencies:

Capacitor

Electrolytic Capacitor

Thin Film

Solid Electrolytic

Manufacturing Method

Electrical Storage Device

Multilayer Capacitor

Power Supply

High Voltage

Surface Mounting

Polymer Laminated

Cased Capacitor

36 patents: Sort by Forward Citations

1. 12597563 - Capacitor and method for manufacturing the same (2026-04-07),

2. 12586723 - Thin film high polymer laminated capacitor (2026-03-24),

3. 12586720 - Capacitor and method for manufacturing same (2026-03-24),

4. 12500041 - Electrolytic capacitor (2025-12-16),

5. 12494324 - Capacitor and method for manufacturing same (2025-12-09),

6. 12463298 - Electrical storage device (2025-11-04),

7. 12456587 - Solid electrolytic capacitor including electrolytic solution containing acid and amine, and method for manufacturing same (2025-10-28),

8. 12456584 - Thin film polymer laminated capacitor and manufacturing method therefor (2025-10-28),

9. 12437935 - Solid electrolytic capacitor containing oxygen-containing amine without hydroxy group and method for manufacturing same (2025-10-07),

10. 12249460 - Film capacitor, power converting device, and vehicle including the same (2025-03-11),

11. 12217917 - Solid electrolytic capacitor with small equivalent series resistance and method for manufacturing the same (2025-02-04),

12. 12176156 - Electrolytic capacitor for high withstand voltage (2024-12-24),

13. 11967465 - Film capacitor, power converting device, and vehicle including the same (2024-04-23),

14. 11908632 - Solid electrolytic capacitor with small equivalent series resistance and method for manufacturing the same (2024-02-20),

15. 11854748 - Thin film high polymer laminated capacitor manufacturing method (2023-12-26),

Company Overview

Rubycon Corporation, headquartered in Nagano, Japan, specializes in the development and manufacturing of capacitors and related electronic components. The company is recognized for its expertise in aluminum electrolytic capacitors, tantalum capacitors, and other passive components, serving a diverse range of industries including consumer electronics, automotive, and industrial applications. Rubycon is committed to advancing technology through innovation and high-quality production, contributing to the evolving landscape of electronic devices and systems.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 6 2026

36 Patents

#37 in Nagano

#2,100 in Japan

#18,716 in the World

Rubycon Corporation

Forward Citations = 105

39 inventors:

Akihiko Komatsu (15 out of 15 patents)

Yoshishige Sakurai (11 out of 11 patents)

Tetsushi Ogawara (9 out of 9 patents)

4. Tomonao Kako (8 out of 8 patents)

5. Yosuke Nozawa (6 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Rubycon Corporation. Retrieved from https://idiyas.com/company/rubycon

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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