Hiroyuki Nakaishi

This inventor holds 17 USPTO granted patents and 2 published patent applications, plus 1 CIPO patent and 5 EPO patents, primarily in Redox Flow Batteries. Top assignees: Sumitomo Electric Industries, Limited, Komatsu Corporation, The Kansai Electric Power Co., Inc.. Active years: 1996-2021.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Nakaishi. Retrieved from https://idiyas.com/inventor/hiroyuki-nakaishi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank

USPTO Granted Patents = 17 (Patent Applications = 2)

% Patents Active = 82.4

CIPO Patents = 1

EPO Patents = 5 (Patent Applications = 4)

Average Co-Inventor Count = 1.8

ph-index = 7

Forward Citations = 132(Granted Patents)

Location History:

Osaka-fu, JP (2001)
Osaka, JP (1996 - 2021)

Company Filing History:

12 out of 10,652

Sumitomo Electric Industries, Limited

The Kansai Electric Power Co., Inc.

patents

where one patent can have more than one assignee

Years Active: 1996-2021

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Areas of Expertise:

Bipolar Plate

Cell Stack

Redox Flow Battery

Sealing Member

Electrolyte Circulation

Fixing Structure

Seal Assembly

Crawler-Track Connection

Surface Modification

Fluororesin Product

17 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 11108057 - Bipolar plate, cell stack, and redox flow battery (2021-08-31),

2. 11069901 - Electrode for redox flow battery, and redox flow batteries (2021-07-20),

3. 10720654 - Sealing member with bifurcated annular leg portions and battery using the same (2020-07-21),

4. 10033053 - Flow battery and supply/discharge plate of flow battery (2018-07-24),

5. 9673474 - Battery cell stack and redox flow battery (2017-06-06),

6. 9172069 - Battery sealing structure, electrolyte circulation type battery cell frame, electrolyte circulation type battery cell stack, and electrolyte circulation type battery (2015-10-27),

7. D731411 - Redox flow battery cell stack (2015-06-09),

8. 9017869 - Cell stack for redox flow battery (2015-04-28),

9. 7670719 - Cell stack for redox flow battery, and redox flow battery (2010-03-02),

10. 7258947 - Electrolyte for redox flow battery, and redox flow battery (2007-08-21),

11. 7121555 - Seal assembly and crawler-track connection structure (2006-10-17),

12. 6955359 - Seal assembly and crawler-track connection structure (2005-10-18),

13. 6926460 - Fixing structure for fixing a pin to a link in a caterpillar (2005-08-09),

14. 6612663 - Fixing structure between links and pins in crawler (2003-09-02),

15. 6270173 - Fixing structure of link and pin of travelling crawler belt, and fixing method thereof (2001-08-07),

Title: Hiroyuki Nakaishi: Innovator in Energy Storage Technologies

Introduction

Hiroyuki Nakaishi is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of energy storage technologies, holding a total of 17 patents. His innovative work focuses on advancements in bipolar plates and redox flow batteries, which are crucial for improving energy efficiency and storage capabilities.

Latest Patents

Nakaishi's latest patents include a bipolar plate designed to enhance the performance of redox flow batteries. This bipolar plate is arranged to face an electrode along which electrolyte is circulated. It features a flow passage on at least one of its surfaces, allowing for efficient electrolyte circulation. The design includes an introduction path for electrolyte entry and a discharge path that operates independently, ensuring optimal performance. Additionally, he has developed an electrode for redox flow batteries, which consists of a substrate with a conductive portion and a catalytic portion. The conductive portion incorporates elements such as Sn, Ti, and Zn, while the catalytic portion includes precious metals like Ru and Pt.

Career Highlights

Throughout his career, Hiroyuki Nakaishi has worked with notable companies, including Sumitomo Electric Industries and Komatsu Corporation. His experience in these organizations has allowed him to refine his expertise in energy technologies and contribute to various innovative projects.

Collaborations

Nakaishi has collaborated with esteemed colleagues such as Akira Hashimoto and Teiji Yamamoto. These partnerships have fostered a creative environment that has led to groundbreaking advancements in their respective fields.

Conclusion

Hiroyuki Nakaishi's contributions to energy storage technologies through his numerous patents highlight his role as a leading inventor in the industry. His innovative designs and collaborative efforts continue to influence the development of efficient energy solutions.

Profile summary based on public USPTO records.