Minamiashigara, Japan

Yujiro Yanai

This inventor holds 66 USPTO granted patents and 42 published patent applications and 4 EPO patents, primarily in Optical Devices (CPC class G02F). Top assignee: Fujifilm Corporation. Active years: 2011-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yujiro Yanai. Retrieved from https://idiyas.com/inventor/yujiro-yanai

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

Calculating rank
USPTO Granted Patents = 66 

% Patents Active = 92.4

 

Average Co-Inventor Count = 2.6

ph-index = 5

Forward Citations = 61(Granted Patents)

Forward Citations (Not Self Cited) = 51(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Minami-Ashigara, JP (2011 - 2024)
  • Kanagawa, JP (2012 - 2024)

Company Filing History:


Years Active: 2011-2026

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Areas of Expertise:
Liquid Crystal Display
Projection System
Optical Filter
Cholesteric Liquid Crystal
Backlight Unit
Image Display
Virtual Reality
Wearable Display
Sensor
Optical Laminate
Polarizing Plate
Display Device
66 patents (USPTO):Explore Patents

Title: Innovator Yujiro Yanai: Pioneering Optical Measurement and Projection Technologies

Introduction: Yujiro Yanai, a prominent inventor based in Minami-ashigara, Japan, has made significant contributions to the fields of optical measurement and display technologies. With a remarkable portfolio of 55 patents, Yanai continues to push the boundaries of innovation through his latest inventions.

Latest Patents: Yanai's recent work includes two noteworthy patents. The first is a concentration measuring method and device for optically active substances, designed to accurately measure concentrations of such substances in aqueous humor. This method involves a four-step process of measuring the polarization states of reflected light to calculate the optical rotation and ultimately derive concentration values.

The second patent focuses on a projection-image-displaying laminate film, laminated glass, and an image display system. This invention aims to provide undistorted projection images for head-up displays (HUDs) by utilizing a specially designed half-mirror film and heat-sealing layer. The technological advancements in this patent are set to enhance the quality of display systems across various applications.

Career Highlights: Throughout his career at Fujifilm Corporation, Yanai has established himself as a leader in optics and display technologies. His innovative mindset and dedication to research and development have earned him recognition in the industry, further validating his standing as an accomplished inventor.

Collaborations: Yanai works alongside talented colleagues such as Akira Yamamoto and Yukito Saitoh. Together, they collaborate on projects that drive forward-thinking solutions and elevate the standard of technology in their respective fields.

Conclusion: Yujiro Yanai's work exemplifies the spirit of innovation and the impact that dedicated inventors can have within the realm of science and technology. His patents, particularly in optical measurement and display systems, are set to influence future advancements, making a significant mark in the industry.

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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