Takumi Shiiyama

This inventor holds 21 USPTO granted patents and 5 published patent applications and 2 EPO patents, primarily in Battery Management Systems. Top assignees: Honda Motor Co., Ltd., Gs Yuasa Infrastructure Systems Co., Ltd.. Active years: 2020-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takumi Shiiyama. Retrieved from https://idiyas.com/inventor/takumi-shiiyama

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 = 5)

% Patents Active = 100.0

EPO Patents = 2 (Patent Applications = 2)

Average Co-Inventor Count = 3.5

ph-index = 2

Forward Citations = 11(Granted Patents)

Location History:

Saitama, JP (2020 - 2024)
Wako, JP (2021 - 2024)

Company Filing History:

21 out of 22,006

Honda Motor Co., Ltd.

patents

1 out of 1

Gs Yuasa Infrastructure Systems Co., Ltd.

patent

where one patent can have more than one assignee

Years Active: 2020-2026

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Areas of Expertise:

Battery System

Information Processing

Charging Control

Wireless Charging

Power Supply Device

Battery Management

Autonomous Machines

Computer-Readable Storage

Power Transmission Coil

Battery Exchanger

Management Device

Lawnmower

21 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12519333 - Battery system (2026-01-06),

2. 12397676 - Information processing apparatus and OCV adjustment method (2025-08-26),

3. 12352815 - Battery information management system and battery information management method (2025-07-08),

4. 12147436 - Battery information processing system and battery information processing method to identify batteries in accordance with a specification (2024-11-19),

5. 11934195 - Charging control system, charging station, autonomous traveling work machine, and charging control system control method (2024-03-19),

6. 11893517 - Information processing apparatus, computer-readable storage medium, and information processing method (2024-02-06),

7. 11654783 - Electric lawnmower with coil for wireless charging and discharging of battery pack (2023-05-23),

8. 11631979 - Charging control system, autonomous traveling work machine, and charging station (2023-04-18),

9. 11576302 - Charging control system, charging station, autonomous traveling working machine and control method for charging control system (2023-02-14),

10. 11424681 - Multiphase switching power supply device (2022-08-23),

11. 11408941 - Information processing apparatus, computer-readable storage medium, and information processing method (2022-08-09),

12. 11254235 - Information processing apparatus, computer-readable storage medium, and information processing method (2022-02-22),

13. 11205925 - Wireless power feeding structure including a power transmission coil, power reception coil, and a core of a magnetic substance (2021-12-21),

14. 11056806 - Housing device for storage battery housing (2021-07-06),

15. 11050269 - Charge control device and computer readable storage medium (2021-06-29),

Title: Takumi Shiiyama: Pioneering Inventor from Saitama

Introduction: Takumi Shiiyama is a renowned inventor hailing from Saitama, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Takumi Shiiyama holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Takumi Shiiyama has worked with leading research institutions and tech companies, consistently pushing the boundaries of what is possible in the realm of invention.

Collaborations: Throughout his career, Takumi Shiiyama has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of innovation and excellence in all his projects.

Conclusion: Takumi Shiiyama's passion for innovation and his relentless pursuit of technological advancement continue to inspire the next generation of inventors and shape the future of technology in Japan and beyond.

Profile summary based on public USPTO records.