Tokushima, Japan

Takefumi Nakagawa

This inventor holds 2 USPTO granted patents and 1 published patent application. Top assignee: Nichia Corporation. Active years: 2023-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takefumi Nakagawa. Retrieved from https://idiyas.com/inventor/takefumi-nakagawa

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

Calculating rank
USPTO Granted Patents = 2 

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 1


Company Filing History:


Years Active: 2023-2026

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2 patents (USPTO):Explore Patents

Title: Takefumi Nakagawa: Innovator in Light-Emitting Technology

Introduction

Takefumi Nakagawa is a prominent inventor based in Tokushima, Japan. He has made significant contributions to the field of light-emitting technology, holding 2 patents that showcase his innovative approach to manufacturing light-emitting elements and devices. His work is instrumental in advancing the capabilities of semiconductor technologies.

Latest Patents

One of Nakagawa's latest patents is a method for manufacturing a light-emitting element. This method involves preparing a wafer that includes a semiconductor structure body and a light-transmitting conductive film. The process includes forming a first mask on the light-transmitting conductive film, removing the exposed conductive film to create an opening, and forming an n-side exposed part by removing the semiconductor structure body. The method continues with the formation of additional masks and electrodes, ultimately dividing the semiconductor structure body into multiple element parts.

Another notable patent is for a light-emitting device that comprises a semiconductor structure with a first semiconductor layer, a light-emitting layer, and a second semiconductor layer. This device features conductive members and terminals, all covered by a protective member. Nakagawa's inventions are pivotal in enhancing the efficiency and functionality of light-emitting devices.

Career Highlights

Takefumi Nakagawa is associated with Nichia Corporation, a leading company in the field of light-emitting diodes (LEDs) and other semiconductor technologies. His work at Nichia has allowed him to collaborate with other talented individuals in the industry, furthering the development of innovative technologies.

Collaborations

Some of Nakagawa's notable coworkers include Akira Fujioka and Kazuo Takahashi. Their collective expertise contributes to the advancement of light-emitting technologies and the success of their projects at Nichia Corporation.

Conclusion

Takefumi Nakagawa's contributions to light-emitting technology through his patents and work at Nichia Corporation highlight his role as an influential inventor in the field. His innovative methods and devices continue to shape the future of semiconductor technologies.

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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