Hiroaki Nishiumi

This inventor holds 21 USPTO granted patents and 3 published patent applications, plus 5 CIPO patents and 1 EPO patent, primarily in Fuel Cell Technology. Top assignees: Toyota Jidosha Kabushiki Kaisha, Taiho Kogyo Co., Ltd., Aisin Corporation. Active years: 2003-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroaki Nishiumi. Retrieved from https://idiyas.com/inventor/hiroaki-nishiumi

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

Calculating rank

USPTO Granted Patents = 21 (Patent Applications = 3)

% Patents Active = 90.5

CIPO Patents = 5

EPO Patents = 1 (Patent Applications = 2)

Average Co-Inventor Count = 2.1

ph-index = 2

Forward Citations = 31(Granted Patents)

Company Filing History:

21 out of 39,010

Toyota Jidosha Kabushiki Kaisha

patents

2 out of 288

Taiho Kogyo Co., Ltd.

Aisin Seiki Kabushiki Kaisha

where one patent can have more than one assignee

Years Active: 2003-2025

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Areas of Expertise:

Fuel Cell

Fuel Cell Vehicle

Fuel Cell Module

Fuel Cell System

Gas-liquid Separator

Gas Filling System

Insulator

Fuel Cell Case

Fuel Cell Device

Fuel Cell Apparatus

Manufacturing Method

Mounting Structure

21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12427443 - Gas-liquid separator (2025-09-30),

2. 11728503 - Fuel cell module (2023-08-15),

3. 11652222 - Fuel cell system (2023-05-16),

4. 11637297 - Fuel cell system (2023-04-25),

5. 11225152 - Fuel cell vehicle (2022-01-18),

6. 10991958 - Gas and water discharge unit for fuel cell system (2021-04-27),

7. 10919576 - Vehicle (2021-02-16),

8. 10737565 - Fuel cell vehicle (2020-08-11),

9. 10608262 - Fuel cell vehicle (2020-03-31),

10. 10559841 - Fuel cell and manufacturing method of fuel cell (2020-02-11),

11. 10468705 - Fuel cell case (2019-11-05),

12. 10179520 - Fuel cell vehicle (2019-01-15),

13. 10014549 - Fuel cell system (2018-07-03),

14. 9985300 - Insulator and fuel cell device (2018-05-29),

15. 9834079 - Fuel cell vehicle (2017-12-05),

Title: Hiroaki Nishiumi - Innovator at Toyota, JP

Introduction: Hiroaki Nishiumi is a renowned inventor based in Toyota, Japan, known for his groundbreaking contributions to the automotive industry.

Latest Patents: Hiroaki Nishiumi holds several patents related to hybrid vehicle technology, safety features, and sustainable energy solutions.

Career Highlights: With a career spanning over two decades at Toyota, Nishiumi has played a pivotal role in the development of eco-friendly vehicles and cutting-edge automotive technologies.

Collaborations: Throughout his career, Hiroaki Nishiumi has collaborated with top engineers, researchers, and designers within Toyota and across the industry to drive innovation and create next-generation vehicles.

Conclusion: Hiroaki Nishiumi's passion for innovation and commitment to sustainability continue to inspire the automotive industry, making him a key figure in the realm of automotive inventions.

Profile summary based on public USPTO records.