For the Inventor, By the Inventor

Enter assignee name

Fdk Corporation

Calculating rank

USPTO Granted Patents = 224

% Expired Patents = 21.4

CIPO Patents = 1

EPO Patents = 74

Trademarks = 5

Forward Citations = 816

Loading Chart...

Loading Chart...

335 inventors (with patents filed for the assignee):

Fumiaki Nakao (16 out of 32 patents)

Mikio Kitaoka (15 out of 16 patents)

Yukihiro Yamamoto (10 out of 16 patents)

4. Hirotaka Kawai (10 out of 23 patents)

5. Hiromitsu Umezawa (10 out of 11 patents)

6. Daisuke Hirata (9 out of 15 patents)

7. Yasunari Mizoguchi (9 out of 9 patents)

8. Masaru Kihara (9 out of 32 patents)

9. Norio Fukui (9 out of 9 patents)

10. Tetsuya Suzuki (9 out of 50 patents)

11. Akira Saguchi (9 out of 13 patents)

12. Jun Ishida (8 out of 25 patents)

13. Hiroyuki Shibaoka (8 out of 8 patents)

14. Naoaki Nishimura (8 out of 12 patents)

15. Kenji Kitamura (8 out of 60 patents)

Core Competencies:

Battery Packaging

Alkaline Batteries

Charging Systems

Backup Power Supply

Battery Voltage Equalization

Nickel Metal Hydride

All-Solid-State Battery

Power Supply Systems

Battery Electrode

Charging Devices

Battery Management

Energy Storage

224 patents: Sort by Forward Citations

1. 12776549 - Sealing body for cylindrical storage battery and cylindrical storage battery using same (2026-10-27),

2. 12763586 - Power supply device (2026-10-13),

3. 12763376 - Non-aqueous electrolyte battery (2026-10-13),

4. 12754254 - Method of estimating life of nickel-metal hydride battery (2026-10-06),

5. 12748150 - Power storage control apparatus, power storage apparatus, remaining charge time computing method, and non-transitory computer-readable storage medium storing remaining charge time computing program (2026-09-29),

6. 12693947 - Control device and method for rewriting control program (2026-07-28),

7. D1135804 - Battery with terminals (2026-07-21),

8. D1134144 - Battery pair with terminals (2026-07-14),

9. D1126753 - Battery packaging container (2026-05-19),

10. 12627014 - Alkaline storage battery (2026-05-12),

11. D1121433 - Battery packaging container (2026-04-07),

12. 12580410 - Charging method and backup power supply device (2026-03-17),

13. 12580236 - Battery pack, charging system, and method for charging battery pack (2026-03-17),

14. 12573693 - Sealing body and battery (2026-03-10),

15. 12567755 - Battery bank unit, remaining charge time calculation method, and remaining charge time calculation program (2026-03-03),

Company Overview

FDK Corporation, headquartered in Tokyo, Japan, specializes in advanced battery technology, focusing on the development and manufacturing of various battery solutions. The company is known for its expertise in battery packaging, alkaline batteries, and innovative charging systems, catering to diverse applications including backup power supply and power supply systems. FDK is also engaged in research on nickel metal hydride and all-solid-state batteries, positioning itself as a key player in the evolving energy storage landscape.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Nov 3 2026

224 Patents

#325 in Tokyo

#656 in Japan

#3,814 in the World

Fdk Corporation

Forward Citations = 816

335 inventors:

Fumiaki Nakao (16 out of 32 patents)

Mikio Kitaoka (15 out of 16 patents)

Yukihiro Yamamoto (10 out of 16 patents)

4. Hirotaka Kawai (10 out of 23 patents)

5. Hiromitsu Umezawa (10 out of 11 patents)

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

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]

Loading…