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For the Inventor, By the Inventor

Kosai, Japan

Fdk Energy Co., Ltd.

Calculating rank
USPTO Granted Patents = 11

% Expired Patents = 18.2


Forward Citations = 32

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15 inventors (with patents filed for the assignee):

goldMedal Yuji Tsuchida (6 out of 6 patents)

silverMedal Tatsuya Yamazaki (5 out of 88 patents)

bronzeMedal Shigeyuki Kuniya (4 out of 9 patents)

4.  Yukiyoshi Murakami (3 out of 3 patents)

5.  Masato Nakamura (2 out of 3 patents)

6.  Itsue Yoshioka (2 out of 2 patents)

7.  Kiyohide Tsutsui (2 out of 2 patents)

8.  Nobuyuki Wakuda (2 out of 2 patents)

9.  Hiroshi Shibata (2 out of 3 patents)

10.  Yoshiaki Ishitani (1 out of 1 patent)

11.  Shuji Murakami (1 out of 1 patent)

12.  Hidenori Tsuzuki (1 out of 1 patent)

13.  Yuji Takahashi (1 out of 2 patents)

14.  Takeo Nogami (1 out of 1 patent)

15.  Norihisa Watanabe (1 out of 1 patent)


11 patents:

1. 9728752 - Alkaline battery including cathode can with coating composed of nickel-cobalt alloy (2017-08-08),
2. 8673485 - Cylindrical battery and gasket for use in same (2014-03-18),
3. 8546015 - Battery can and alkaline battery (2013-10-01),
4. 8361650 - Sealing gasket for alkaline dry cell (2013-01-29),
5. 8137835 - Plated steel plate for cell can, battery, alkaline dry battery (2012-03-20),
6. 8040109 - Battery terminal inspection apparatus, inspection method, and cylindrical dry battery (2011-10-18),
7. 7923146 - Nickel bright-plated battery (2011-04-12),
8. 7745038 - Alkaline dry battery and sealing gasket therefor (2010-06-29),
9. 7422113 - Battery container case (2008-09-09),
10. 7144656 - Alkaline battery sealing gasket and sealed alkaline battery (2006-12-05),
11. D530946 - Combined display and dispenser for batteries (2006-10-31),
Company Overview
Fdk Energy Co., Ltd. is a prominent player in the energy sector, specializing in the development and manufacturing of advanced battery technologies and energy storage solutions. The company focuses on innovative applications for various industries, including automotive, consumer electronics, and renewable energy systems. Based in Kosai, Japan, Fdk Energy is committed to enhancing energy efficiency and sustainability through its cutting-edge research and development efforts, contributing to a greener future.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Nov 3 2026

11 Patents

#8 in Kosai

#4,142 in Japan

#51,873 in the World

Kosai, JP
Kosai, Japan

Fdk Energy Co., Ltd.

Forward Citations = 32

15 inventors:

goldMedal Yuji Tsuchida (6 out of 6 patents)

silverMedal Tatsuya Yamazaki (5 out of 88 patents)

bronzeMedal Shigeyuki Kuniya (4 out of 9 patents)

4.  Yukiyoshi Murakami (3 out of 3 patents)

5.  Masato Nakamura (2 out of 3 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Fdk Energy Co., Ltd.. Retrieved from https://idiyas.com/company/fdk-energy-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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