Hitachi, Japan

Masamitsu Inaba

This inventor holds 13 USPTO granted patents and 2 EPO patents. Top assignees: Hitachi, Ltd., Hitachi Power Semiconductor Device, Ltd., Hitachi Haramichi Electronics Co., Ltd.. Active years: 1997-2022.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masamitsu Inaba. Retrieved from https://idiyas.com/inventor/masamitsu-inaba

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


% Patents Active = 53.8

 

Average Co-Inventor Count = 4.0

ph-index = 6

Forward Citations = 98(Granted Patents)


Location History:

  • Chiyoda-ku, JP (2008 - 2009)
  • Hitachi, JP (1997 - 2022)

Company Filing History:


Years Active: 1997-2022

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13 patents (USPTO):Explore Patents

Title: **Masamitsu Inaba: Innovator in Power Semiconductor Technology**

Introduction

Masamitsu Inaba, an accomplished inventor from Hitachi, Japan, has significantly contributed to the field of power semiconductor technology. With a total of 13 patents to his name, his innovations are paving the way for enhanced capabilities in electronic power conversion devices.

Latest Patents

Inaba's recent patents demonstrate a keen focus on improving semiconductor performance. His inventions include a gate drive device, a gate drive method, a power semiconductor module, and an electric power conversion device. These devices are designed to reduce the negative gate surge voltage, thereby enhancing the efficiency and reliability of semiconductor operations. Notably, the gate drive device drives a semiconductor device that forms part of an electric power conversion apparatus, ensuring optimal performance before the turn-off start of a drive arm.

Furthermore, his semiconductor power module invention is adept at suppressing noise influences from main terminals to control terminals, thereby increasing the operational stability of electronic systems. This design allows main terminals to be bifurcated or structured in a way that aligns with functional requirements, effectively contributing to the reliability of power conversion apparatuses.

Career Highlights

Throughout his career, Masamitsu Inaba has made valuable contributions while working at notable companies such as Hitachi, Ltd. and Hitachi Power Semiconductor Device, Ltd. His role in these organizations has enabled him to push the envelope of technological advancements in semiconductor devices.

Collaborations

Inaba has collaborated with esteemed colleagues in the field, including Mutsuhiro Mori and Katsunori Azuma. These partnerships have likely fostered an environment of innovation and knowledge sharing, further enhancing his inventive capabilities.

Conclusion

Masamitsu Inaba's contributions to the field of power semiconductor technology are commendable. His innovative patents reflect a commitment to advancing electronic systems' efficiency and performance. As the demand for reliable and efficient power devices grows, his work will undoubtedly play a crucial role in shaping the future of semiconductor technology.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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