Fujisawa, Japan

Masaaki Okunaka

This inventor holds 25 USPTO granted patents and 1 published patent application, primarily in Organic Electroluminescence. Top assignees: Hitachi, Ltd., Hitachi Displays, Ltd., Hitachi Chemical Company, Ltd.. Active years: 1981-2012.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaaki Okunaka. Retrieved from https://idiyas.com/inventor/masaaki-okunaka

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

USPTO Granted Patents = 25 

% Patents Active = 96.0

Average Co-Inventor Count = 4.5

ph-index = 14

Forward Citations = 486(Granted Patents)


Location History:

  • Tokyo, JP (2005)
  • Fujisawa, JP (1981 - 2012)
  • Mobara, JP (2006 - 2012)

Company Filing History:


Years Active: 1981-2012

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Areas of Expertise:
Organic EL Display
Electroluminescent Device
Moisture Diffusion
Light Shielding
Thin Film Process
Solar Cell Production
Transparent Conductive Film
Photomask Correction
Display Panel
Flat Panel Display
Defect Inspection
Electrode Material
25 patents (USPTO):Explore Patents

Title: Masaaki Okunaka: Pioneering Inventor from Fujisawa

Introduction: Masaaki Okunaka is a renowned inventor hailing from Fujisawa, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Okunaka's latest patents include advancements in artificial intelligence algorithms for autonomous vehicles, wearable technology for healthcare monitoring, and sustainable energy solutions for urban environments.

Career Highlights: With over two decades of experience in research and development, Okunaka has worked with leading tech companies in Japan, spearheading projects that have revolutionized various industries.

Collaborations: Throughout his career, Okunaka has collaborated with top universities and research institutions worldwide, fostering a culture of innovation and knowledge sharing in the scientific community.

Conclusion: Masaaki Okunaka's dedication to pushing the boundaries of technology and his passion for creating a better future through innovation continue to inspire the next generation of inventors and researchers globally.

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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