Tsuyoshi Maruo

This inventor holds 25 USPTO granted patents and 10 published patent applications, plus 14 CIPO patents and 4 EPO patents, primarily in Fuel Cell Technology. Top assignee: Toyota Jidosha Kabushiki Kaisha. Active years: 2013-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsuyoshi Maruo. Retrieved from https://idiyas.com/inventor/tsuyoshi-maruo

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

USPTO Granted Patents = 25 (Patent Applications = 10)

% Patents Active = 92.0

CIPO Patents = 14

EPO Patents = 4 (Patent Applications = 4)

Average Co-Inventor Count = 3.9

ph-index = 2

Forward Citations = 5(Granted Patents)

Location History:

Susono, JP (2013)
Toyota, JP (2017)
Toyohashi, JP (2017 - 2020)
Okazaki, JP (2019 - 2023)

Company Filing History:

25 out of 38,912

Toyota Jidosha Kabushiki Kaisha

patents

Years Active: 2013-2025

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Areas of Expertise:

Fuel Cell System

Voltage Control

Water Purging

Cooling Medium

Emergency Stop

Operation Control

Residual Water Scavenging

Water Content Estimation

Control Method

Fuel Cell Vehicle

Power Supply

Flow Control

25 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12489124 - Fuel cell system (2025-12-02),

2. 11621431 - Fuel Cell System (2023-04-04),

3. 11621430 - Fuel cell system (2023-04-04),

4. 11437636 - Fuel cell system (2022-09-06),

5. 11322760 - Fuel cell system and method for controlling fuel cell system (2022-05-03),

6. 11196066 - Fuel cell system (2021-12-07),

7. 10804551 - Fuel cell system and remaining water purging control method (2020-10-13),

8. 10553885 - Power supply system and voltage control method of fuel cell (2020-02-04),

9. 10522853 - Fuel cell system, fuel cell vehicle and control method of fuel cell system (2019-12-31),

10. 10516179 - Fuel cell system and method of controlling the same (2019-12-24),

11. 10483572 - Flow control method of cooling medium in a fuel cell system, and fuel cell system (2019-11-19),

12. 10476092 - Fuel cell system, fuel cell mountable vehicle and method of controlling fuel cell system (2019-11-12),

13. 10424799 - Fuel cell system and control method thereof (2019-09-24),

14. 10388974 - Fuel cell system and emergency stop method (2019-08-20),

15. 10381668 - Operation control method of fuel cell and operation control apparatus of fuel cell (2019-08-13),

Title: Tsuyoshi Maruo: Pioneering Inventor in the Tech Landscape

Introduction: Tsuyoshi Maruo, a prominent inventor based in Toyohashi, Japan, is renowned for his passion for innovation and his unwavering commitment to overcoming complex technological challenges. With a total of 24 patents to his name, he stands as a trailblazer in the global tech industry.

Latest Patents:

1. Fuel Cell System: This innovative system comprises a fuel cell, a hydrogen tank, a hydrogen supply passage, a cutoff valve, a detection unit, and a purge controller. The system is designed to optimize the circulation of hydrogen, ensuring efficient and safe operation.

2. Fuel Cell System Controller: Maruo's controller integrates cutting-edge technology to enhance the performance of fuel cell systems. It includes features such as freezing presence-absence determination, temperature raising execution, and thawing presence-absence determination for optimal functionality.

Career Highlights: Tsuyoshi Maruo is a key figure at Toyota Jidosha Kabushiki Kaisha, where he has demonstrated his expertise in developing cutting-edge technologies. His relentless pursuit of innovation has led to the creation of groundbreaking solutions in the field of fuel cell systems.

Collaborations: Maruo collaborates closely with accomplished coworkers such as Tomohiro Ogawa and Masashi Toida. Together, they form a dynamic team that drives innovation and excellence in their projects.

Conclusion: Tsuyoshi Maruo's remarkable journey as an inventor showcases his unmatched drive for innovation and his significant contributions to the tech landscape. His pioneering spirit and collaborative efforts continue to inspire advancements in technology, solidifying his legacy as a visionary inventor.

Profile summary based on public USPTO records.