Tokyo, Japan

Haruo Matsumaru

This inventor holds 26 USPTO granted patents, primarily in Thin Film Transistors. Top assignees: Hitachi, Ltd., Hitachi Denshi Kabushiki Kaisha, Hitachi Electronics Co., Ltd.. Active years: 1976-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Haruo Matsumaru. Retrieved from https://idiyas.com/inventor/haruo-matsumaru

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


% Patents Active = 100.0

Average Co-Inventor Count = 6.2

ph-index = 17

Forward Citations = 712(Granted Patents)


Location History:

  • Tokyo, JA (1976)
  • Nishitama, JP (1993)
  • Hinodemachi, JP (1980 - 1997)
  • Tokyo, JP (1980 - 2001)

Company Filing History:


Years Active: 1976-2001

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Areas of Expertise:
Active Matrix Display
Aluminum Alloy
Thin Film Transistor
LCD Device
Manufacturing Method
Signal Line Repair
Transparent Conductive Strips
Photosensor Array
Solid State Imager
Color Pickup Tube
Evaporation Techniques
26 patents (USPTO):Explore Patents

Title: Haruo Matsumaru - Innovative Inventor from Tokyo

Introduction: Haruo Matsumaru is a renowned inventor hailing from Tokyo, Japan, known for his groundbreaking contributions to the field of technology and innovation.

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

Career Highlights: With a career spanning over two decades, Haruo Matsumaru has worked with leading tech companies in Japan, spearheading projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Throughout his career, Haruo Matsumaru has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and knowledge-sharing.

Conclusion: Haruo Matsumaru's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a visionary inventor, inspiring the next generation of inventors to push the boundaries of what is possible in the world of 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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