Tokyo, Japan

Takeaki Kumagai

This inventor holds 4 USPTO granted patents and 2 published patent applications and 1 EPO patent. Top assignee: Canon Kabushiki Kaisha. Active years: 2016-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeaki Kumagai. Retrieved from https://idiyas.com/inventor/takeaki-kumagai

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

USPTO Granted Patents = 4 

% Patents Active = 75.0

 

Average Co-Inventor Count = 1.6

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:


Years Active: 2016-2026

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4 patents (USPTO):Explore Patents

Title: Takeaki Kumagai: Innovator in Optical Technology

Introduction

Takeaki Kumagai is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of optical technology, holding three patents that showcase his innovative spirit and technical expertise.

Latest Patents

Kumagai's latest patents include an optical element, a method for manufacturing the same, and an optical apparatus. The optical element features a substrate with an optically effective surface and an optically non-effective surface, complemented by a light shielding film over the non-effective surface. This design incorporates an inclined chamfer and a level chamfer that define a ridge portion, which is coated with an aliphatic hydrocarbon. Another notable patent is for an organic-inorganic composite molded product, which consists of a mixed material including poly(methyl methacrylate) and surface-treated inorganic fine particles. This innovation achieves a low coefficient of linear expansion, making it suitable for various applications.

Career Highlights

Kumagai is currently employed at Canon Kabushiki Kaisha, a leading company in imaging and optical products. His work at Canon has allowed him to push the boundaries of optical technology and contribute to advancements in the field.

Collaborations

Some of Kumagai's notable coworkers include Shuhei Yamamoto and Norihiko Ochi. Their collaboration has fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Takeaki Kumagai's contributions to optical technology through his patents and work at Canon highlight his role as a key innovator in the industry. His advancements continue to influence the field and inspire future developments in optical applications.

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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