Kanagawa, Japan

Masaru Izumisawa

This inventor holds 36 USPTO granted patents and 9 published patent applications, primarily in Semiconductor Devices. Top assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation. Active years: 2004-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaru Izumisawa. Retrieved from https://idiyas.com/inventor/masaru-izumisawa

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

Calculating rank
USPTO Granted Patents = 36 

% Patents Active = 36.1

Average Co-Inventor Count = 4.9

ph-index = 10

Forward Citations = 424(Granted Patents)


Location History:

  • Kawasaki, JP (2004 - 2008)
  • Himeji, JP (2011)
  • Kanagawa-ken, JP (2007 - 2014)
  • Hyogo-ken, JP (2009 - 2014)
  • Hyogo, JP (2014 - 2015)
  • Ishikawa, JP (2015)
  • Kanazawa Ishikawa, JP (2016)
  • Kanagawa, JP (2005 - 2019)

Company Filing History:


Years Active: 2004-2025

Loading Chart...
Areas of Expertise:
Power Semiconductor Device
Super Junction Region
Power MOSFET
Vertical Type Device
Resurf Layer
P Type Region
N Type Region
Manufacturing Method
Semiconductor Apparatus
Switching Element
Forward Tapered Teeth
36 patents (USPTO):Explore Patents

Title: Masaru Izumisawa: Innovator in Semiconductor Technology

Introduction

Masaru Izumisawa is an esteemed inventor based in Kanagawa-ken, Japan. With an impressive portfolio of 35 patents, he has significantly contributed to advancements in semiconductor technology. His work continues to influence the development of modern electronic devices.

Latest Patents

Among his recent innovations, Izumisawa has developed groundbreaking semiconductor devices that enhance performance and efficiency. One notable patent is for a "Semiconductor device with super junction region," which features a first-conductivity-type semiconductor layer designed with a cell region portion and a junction terminating region portion. This design maintains breakdown voltage by extending a depletion layer to mitigate electric field intensity. Another significant patent involves a "Semiconductor device" that incorporates various semiconductor regions and an element region surrounded by a termination region, thereby optimizing the device's functionality.

Career Highlights

Masaru Izumisawa has established his career at Kabushiki Kaisha Toshiba, where he has devoted his expertise to the advancement of semiconductor technology. His innovative approaches have not only led to numerous patents but also positioned him as a key figure in the industry.

Collaborations

Throughout his career, Izumisawa has collaborated with talented colleagues, including Syotaro Ono and Wataru Saito. These partnerships have fostered a transformative environment that encourages creativity and innovation.

Conclusion

Masaru Izumisawa's contributions to semiconductor technology have made a lasting impact on the field. His extensive patent portfolio and collaborative spirit exemplify the drive for innovation that continues to shape the electronics industry. As he advances his work, the influence of his inventions is likely to resonate well beyond his current endeavors.

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]
Loading…