Mobara, Japan

Naotoshi Sumiya

This inventor holds 3 USPTO granted patents. Top assignee: Hitachi Displays, Ltd.. Active years: 2010-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Naotoshi Sumiya. Retrieved from https://idiyas.com/inventor/naotoshi-sumiya-jeulz04n

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

Calculating rank

% Patents Active = 33.3

Average Co-Inventor Count = 2.9

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 2010-2011

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3 patents (USPTO):Explore Patents

Title: Naotoshi Sumiya: Innovator in Liquid Crystal Display Technology

Introduction

Naotoshi Sumiya is a prominent inventor based in Mobara, Japan. He has made significant contributions to the field of liquid crystal display (LCD) technology. With a total of 3 patents to his name, Sumiya's work has had a considerable impact on the development of display devices.

Latest Patents

One of Sumiya's latest patents is a liquid crystal display device that utilizes external electrode fluorescent lamps. This innovative design features a backlight structural body that includes multiple external electrode fluorescent lamps arranged in parallel. The device also incorporates a pair of side frames with electricity supply terminals that connect the electrode portions of the lamps in parallel. The upper side frame is designed to cover the electrode portions while providing eaves that protect them.

Another notable patent involves a display device for liquid crystal TVs. This invention provides a direct backlight to enhance brightness near the center of the screen. By using paired fluorescent tubes, Sumiya's design minimizes brightness variation across the display, ensuring a more uniform viewing experience.

Career Highlights

Naotoshi Sumiya is currently employed at Hitachi Displays, Ltd., where he continues to innovate in the field of display technology. His work has been instrumental in advancing the capabilities of LCDs, making them brighter and more efficient.

Collaborations

Sumiya has collaborated with several talented individuals in his field, including Takayuki Ota and Shimon Itakura. These partnerships have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Naotoshi Sumiya's contributions to liquid crystal display technology have established him as a key figure in the industry. His innovative patents and collaborations continue to shape the future of display devices.

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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