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For the Inventor, By the Inventor

Tokyo, Japan

Fdk Corporation


USPTO Granted Patents = 206



Trademarks = 5

Forward Citations = 759

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323 inventors (with patents filed for the assignee):

goldMedal Fumiaki Nakao (16 out of 32 patents)

silverMedal Mikio Kitaoka (15 out of 16 patents)

bronzeMedal Yukihiro Yamamoto (10 out of 16 patents)

4.  Hirotaka Kawai (10 out of 23 patents)

5.  Hiromitsu Umezawa (10 out of 11 patents)

6.  Masaru Kihara (9 out of 32 patents)

7.  Norio Fukui (9 out of 9 patents)

8.  Tetsuya Suzuki (9 out of 50 patents)

9.  Akira Saguchi (9 out of 13 patents)

10.  Daisuke Hirata (8 out of 13 patents)

11.  Yasunari Mizoguchi (8 out of 8 patents)

12.  Jun Ishida (8 out of 25 patents)

13.  Naoaki Nishimura (8 out of 10 patents)

14.  Katsuo Yamada (8 out of 8 patents)

15.  Shigekazu Yasuoka (8 out of 20 patents)


Core Competencies:
Alkaline Secondary Battery
Nickel Electrode
Power Supply System
Backup Power Supply
All-Solid-State Battery
Charging Device
Air Electrode Catalyst
Battery Module
Hydrogen Absorbing Alloy
Battery Packaging Container
Negative Electrode
Battery Charger

206 patents:

1. 12482820 - Negative electrode for alkaline storage battery and alkaline storage battery including the negative electrode (2025-11-25),
2. 12482808 - Nickel electrode for alkaline secondary battery and alkaline secondary battery including nickel electrode (2025-11-25),
3. 12424685 - Laminate-type power storage element (2025-09-23),
4. 12401067 - Alkaline secondary battery (2025-08-26),
5. 12381262 - Battery pack (2025-08-05),
6. 12374884 - Backup power supply device (2025-07-29),
7. 12322962 - Power supply system and electricity storage device (2025-06-03),
8. 12300809 - Nickel metal hydride secondary battery (2025-05-13),
9. 12272989 - Backup power supply apparatus and backup power supply apparatus controlling method (2025-04-08),
10. 12244027 - Sealing gasket and tubular battery incorporating sealing gasket (2025-03-04),
11. 12218340 - Alkaline battery and method of producing negative electrode gel for alkaline battery (2025-02-04),
12. 12191526 - Battery and manufacturing method thereof (2025-01-07),
13. 12183894 - Electrode for alkaline secondary battery and alkaline secondary battery (2024-12-31),
14. 12132165 - All-solid-state battery (2024-10-29),
15. 12119698 - Control unit, battery pack, and power supply device (2024-10-15),
FDK Corporation is a global leader in the development and manufacture of high-quality electronic components and energy storage devices. With a wide range of products including batteries, magnets, and capacitors, FDK Corporation serves various industries such as automotive, telecommunications, and healthcare. With a strong focus on innovation and customer satisfaction, FDK Corporation continuously strives to deliver cutting-edge solutions that meet the ever-evolving needs of the market.
This text is generated by artificial intelligence and may not be accurate.

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USPTO Data Jan 1 1976 - Dec 30 2025

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206 Patents

#305 in Tokyo

#675 in Japan

#4,005 in the World

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Tokyo, Japan

Fdk Corporation

Forward Citations = 759

323 inventors:

goldMedal Fumiaki Nakao (16 out of 32 patents)

silverMedal Mikio Kitaoka (15 out of 16 patents)

bronzeMedal Yukihiro Yamamoto (10 out of 16 patents)

4.  Hirotaka Kawai (10 out of 23 patents)

5.  Hiromitsu Umezawa (10 out of 11 patents)

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