Yokohama, Japan

Kazumasa Makihara

This inventor holds 3 USPTO granted patents. Top assignee: Sumitomo Electric Industries, Limited. Active years: 2007-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazumasa Makihara. Retrieved from https://idiyas.com/inventor/kazumasa-makihara

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


% Patents Active = 66.7

Average Co-Inventor Count = 4.1

ph-index = 1

Forward Citations = 4(Granted Patents)


Company Filing History:


Years Active: 2007-2011

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3 patents (USPTO):Explore Patents

Title: Kazumasa Makihara: Innovator in Optical Fiber Technology

Introduction

Kazumasa Makihara is a prominent inventor based in Yokohama, Japan. He has made significant contributions to the field of optical fiber technology, holding a total of 3 patents. His work focuses on enhancing the performance of optical fibers, which are crucial for modern communication systems.

Latest Patents

Makihara's latest patents include innovations related to optical fibers, optical transmission lines, optical modules, and optical transmission systems. One of his notable inventions involves an optical fiber designed to increase the figure of merit (FOM) for dispersion compensation modules. This optical fiber is primarily composed of silica glass and features a complex structure that includes a core region, a depressed region, a ring region, and a cladding region. The design allows for a relative refractive index difference that optimizes performance at a wavelength of 1550 nm, achieving a FOM of 250 ps/nm/dB or more.

Career Highlights

Kazumasa Makihara is associated with Sumitomo Electric Industries, Limited, where he has been instrumental in advancing optical fiber technology. His expertise has led to the development of methods for manufacturing optical fiber preforms, which are essential for producing fibers with desired characteristics. His innovative approach includes measuring refractive index profiles and demarcating outer diameter shapes to ensure high-quality optical fibers.

Collaborations

Makihara has worked alongside notable colleagues such as Masaaki Hirano and Atsushi Inoue. Their collaborative efforts have contributed to the success of various projects within the optical fiber domain.

Conclusion

Kazumasa Makihara's contributions to optical fiber technology have significantly impacted the field of telecommunications. His innovative patents and collaborative work continue to pave the way for advancements in optical communication systems.

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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