Toyota, Japan

Tukasa Koumura

This inventor holds 3 USPTO granted patents. Top assignee: Nippondenso Co., Ltd.. Active years: 1995-1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tukasa Koumura. Retrieved from https://idiyas.com/inventor/tukasa-koumura

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 3

Forward Citations = 67(Granted Patents)


Company Filing History:


Years Active: 1995-1996

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3 patents (USPTO):Explore Patents

Title: Innovations by Tukasa Koumura

Introduction

Tukasa Koumura is a notable inventor based in Toyota, Japan. He has made significant contributions to the field of optical technology, particularly in the development of varifocal lenses and optical data readers. With a total of 3 patents, his work showcases innovative solutions that enhance the functionality of optical devices.

Latest Patents

One of his latest patents is a varifocal lens designed to control variable focal lengths through electric signals. This lens is particularly suitable for use in barcode readers. It consists of a first pressure chamber defined between a glass substrate and a transparent elastic film. The design allows for the formation of a lens with a variable focal length, free of aberration, by feeding liquid into the pressure chamber.

Another significant patent involves an optical data reader capable of quickly changing the condensing position of light beams. This device includes a mechanism for producing a light beam and a system for altering the condensing position before the light beam reflects off a target, such as a barcode. The technology utilizes either a variable focus lens or mirror, which can change curvature in response to electrical signals, ensuring efficient data reading.

Career Highlights

Koumura is associated with Nippondenso Co., Ltd., where he has been instrumental in advancing optical technologies. His innovative designs have not only improved existing systems but have also paved the way for new applications in various industries.

Collaborations

Throughout his career, Tukasa Koumura has collaborated with notable colleagues, including Michio Hisanaga and Tadashi Hattori. These partnerships have contributed to the successful development and implementation of his inventions.

Conclusion

Tukasa Koumura's work exemplifies the spirit of innovation in optical technology. His patents reflect a commitment to enhancing the capabilities of optical devices, making significant strides in the field.

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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