Osaka, Japan

Masafumi Seki

This inventor holds 2 USPTO granted patents. Top assignee: Nippon Sheet Glass Company, Limited. Active years: 1988-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masafumi Seki. Retrieved from https://idiyas.com/inventor/masafumi-seki-4ltgmvur

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 = 3.4

ph-index = 2

Forward Citations = 26(Granted Patents)


Location History:

  • Doshomachi, JP (1988)
  • Osaka, JP (1992)

Company Filing History:


Years Active: 1988-1992

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2 patents (USPTO):Explore Patents

Title: Masafumi Seki: Innovator in Optical Waveguide Technology

Introduction

Masafumi Seki is a prominent inventor based in Osaka, Japan. He has made significant contributions to the field of optical waveguide technology, holding a total of 2 patents. His work focuses on processes that enhance the efficiency and precision of optical circuits.

Latest Patents

Masafumi Seki's latest patents include a process for producing a low-loss embedded waveguide. This innovative process involves several steps, including a thermal ion exchange step, an etching step, and an electric field-applying annealing step. The method aims to create a glass substrate that can effectively change its refractive index, thereby improving the performance of optical devices. Another notable patent is related to a demultiplexing and/or multiplexing optical circuit. This invention features a groove for arranging a filter in an optical waveguide, allowing for the simultaneous formation of multiple demultiplexers and multiplexers with high machining precision.

Career Highlights

Masafumi Seki is currently employed at Nippon Sheet Glass Company, Limited. His role at the company allows him to apply his innovative ideas and contribute to advancements in optical technology. His expertise in the field has positioned him as a valuable asset to his organization.

Collaborations

Masafumi has collaborated with notable coworkers, including Yoshiyuki Hanada and Ryoichi Sugawara. These collaborations have likely fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies.

Conclusion

Masafumi Seki's contributions to optical waveguide technology through his patents and work at Nippon Sheet Glass Company, Limited, highlight his role as a key innovator in the field. His advancements continue to influence the development of efficient optical circuits.

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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