Fukushima, Japan

Katsumasa Yoshii

This inventor holds 21 USPTO granted patents, primarily in Liquid Crystal Displays. Top assignees: Alps Electric Co., Ltd., Alps Electronic Co., Ltd., Chisso Corporation. Active years: 1998-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsumasa Yoshii. Retrieved from https://idiyas.com/inventor/katsumasa-yoshii

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


% Patents Active = 38.1

Average Co-Inventor Count = 2.3

ph-index = 5

Forward Citations = 164(Granted Patents)


Location History:

  • Miyagi-gun, JP (1998)
  • Fukushima-ken, JP (2003 - 2009)

Company Filing History:


Years Active: 1998-2009

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Areas of Expertise:
Reflector
Liquid Crystal Display
Viewing Angle
Transflective Film
Active Matrix Display
Light Scattering
Corrugated Surface
Reflectance
Portable Electronic Apparatus
UV Crosslinking Compound
Alignment Film
21 patents (USPTO):Explore Patents

Title: Innovations in Display Technology: The Patents and Career of Katsumasa Yoshii

Introduction

Katsumasa Yoshii, an esteemed inventor based in Fukushima-ken, Japan, has significantly contributed to the field of liquid crystal display (LCD) technology. With a remarkable portfolio of 21 patents, his work focuses on the development of innovative reflectors designed to enhance display performance.

Latest Patents

Yoshii's latest patents include groundbreaking innovations in reflector technology for LCD devices. One of his notable inventions features a reflector that includes a plurality of concave portions. Each concave portion is engineered to demonstrate asymmetric reflectance characteristics when light is incident from different directions. Specifically, this reflector delivers high reflectance within an intended viewing angle while maintaining a non-Gaussian distribution of reflectivity, optimizing the display's visual quality. Another significant patent addresses the suppression of inter-object reflection over a wide angle, further enhancing the performance of reflection-type LCD devices.

Career Highlights

Throughout his career, Yoshii has partnered with leading companies such as Alps Electric Co., Ltd. and Chisso Corporation. His role in these organizations has allowed him to develop and implement cutting-edge technologies that are pivotal to the evolution of LCD systems. His contributions have been instrumental in advancing the efficiency and quality of display devices, which are integral to various applications in consumer electronics.

Collaborations

Yoshii has collaborated with fellow inventors and experts, including Mitsuru Kano and Tatsuya Moriike. These partnerships have not only fostered a collaborative environment for innovation but have also led to the successful development of multiple patented technologies that push the boundaries of display capabilities.

Conclusion

Katsumasa Yoshii's extensive portfolio of patents and his collaborative efforts in the field of LCD technology highlight his crucial role as an innovator. His advancements in reflector design are setting new standards for display performance, thereby influencing both the current market and future technological advancements. Through his work, Yoshii continues to impact the realm of electronic displays, improving the user experience and driving innovation forward.

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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