Akira Bando

This inventor holds 33 USPTO granted patents and 6 published patent applications, plus 3 CIPO patents and 8 EPO patents, primarily in Power Conversion Systems. Top assignees: Hitachi, Ltd., Hitachi Mitsubishi Hydro Corporation, The Kansai Electric Power Co., Inc.. Active years: 1987-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akira Bando. Retrieved from https://idiyas.com/inventor/akira-bando

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

USPTO Granted Patents = 33 (Patent Applications = 6)

% Patents Active = 87.9

CIPO Patents = 3

EPO Patents = 8 (Patent Applications = 13)

Average Co-Inventor Count = 5.8

ph-index = 9

Forward Citations = 250(Granted Patents)

Location History:

Hitachi, JP (1987 - 2015)
Tokyo, JP (2017 - 2024)

Company Filing History:

Hitachi Mitsubishi Hydro Corporation

patents

7 out of 195

The Kansai Electric Power Co., Inc.

patents

4. 5 out of 18

Hitachi Information & Control Solutions, Ltd.

patents

5. 2 out of 30

Hitachi Engineering Services Co., Ltd.

patents

6. 1 out of 18

East Japan Railway Company

patents

7. 1 out of 29

Hitachi Industrial Products, Ltd.

patents

8. 1 out of 50

Hitachi Industry & Control Solutions, Ltd.

The Kansai Elect. Power Co.

patent

where one patent can have more than one assignee

Years Active: 1987-2025

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Areas of Expertise:

Power Converter

Variable Speed Generator

Multilevel Converter

Doubly-Fed Generator

Fault Protection

Synchronization System

Induction Generator

Hydraulic Power Generation

Electric Machine

Communication Control

Task Management Control

Semiconductor Substrates

33 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 12355377 - Adjustable speed generator motor system with full power converter (2025-07-08),

2. 12289063 - Modular multilevel power converter and variable speed generator-motor (2025-04-29),

3. 12237789 - Modular multilevel converter and modular multilevel converter system (2025-02-25),

4. 11942873 - Secondary magnetic excitation generator-motor device (2024-03-26),

5. 11223310 - Variable speed generator/motor device (2022-01-11),

6. 10784808 - Variable speed generator-motor apparatus and variable speed generator-motor system (2020-09-22),

7. 10536104 - Variable speed generator-motor apparatus and variable speed generator-motor system (2020-01-14),

8. 9573489 - Control device for railway power conditioner and control system for railway power conditioner (2017-02-21),

9. 9219426 - Switching element, power converter, direct current transmission system, current control device, method of controlling power converter, and method of controlling current in voltage source converter (2015-12-22),

10. 9208037 - Duplexed operation processor control system, and duplexed operation processor control method (2015-12-08),

11. 9166492 - Multilevel voltage source converter and method for balancing capacitors (2015-10-20),

12. 8896261 - Doubly-fed generator and doubly-fed electric machine (2014-11-25),

13. 8867247 - DC/AC power converter with DC side double frequency pulsation suppression caused by AC side faults (2014-10-21),

14. 8423681 - Control apparatus for process input-output device (2013-04-16),

15. 8209594 - Sending device, receiving device, communication control device, communication system, and communication control method (2012-06-26),

Title: Akira Bando: Innovative Inventor in Power Conversion Technologies

Introduction

Akira Bando is a notable inventor based in Hitachi, Japan, celebrated for his contributions to the field of power conversion technologies. With an impressive portfolio of 33 patents, Bando has made significant advancements in adjustable speed generator motor systems and modular multilevel power converters, establishing himself as a leading figure in innovation within the electrical engineering domain.

Latest Patents

Among his latest innovations are two significant patents: the Adjustable Speed Generator Motor System with Full Power Converter and the Modular Multilevel Power Converter and Variable Speed Generator-Motor.

The Adjustable Speed Generator Motor System incorporates a full power converter in which two 3-level converters are connected back-to-back on the DC side. This system allows for stable operation by providing a mode where a fly-wheeling diode can conduct a current independently based on the current polarity and magnitude relations of the 3-phase AC current.

Additionally, the Modular Multilevel Power Converter includes a sophisticated mechanism for balancing capacitor voltages, detecting active power, and adjusting command values to maintain performance. This innovative design facilitates more efficient power management within variable speed generator-motor applications.

Career Highlights

Akira Bando has worked with prestigious companies, notably Hitachi Ltd. and Kansai Electric Power Co., Inc. His tenure at these organizations has been marked by a focus on developing cutting-edge technologies that enhance energy efficiency and system reliability.

Collaborations

Throughout his career, Bando has collaborated with talented professionals, including Hiroto Nakagawa and Masaya Ichinose. These associations have enabled him to leverage diverse expertise and drive innovation in his projects, fostering a collaborative environment that promotes technological advancements.

Conclusion

Akira Bando's dedication to innovation in power conversion technology underscores his status as a leading inventor in the industry. His 33 patents highlight a profound commitment to enhancing electrical engineering solutions, reflecting his impact on the future of energy systems. As he continues to pioneer new technologies, Bando remains a key figure for aspiring inventors and engineers in the field.

Profile summary based on public USPTO records.