Ibaraki, Japan

Kazuo Onuma

This inventor holds 1 USPTO granted patent. Top assignee: Other. Active years: 2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kazuo Onuma. Retrieved from https://idiyas.com/inventor/kazuo-onuma

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 = 3.0

ph-index = 1

Forward Citations = 1(Granted Patents)


Company Filing History:

goldMedal1 out of 834,708 
Other
 patents

Years Active: 2003

Loading Chart...
1 patent (USPTO):Explore Patents

Title: Kazuo Onuma and His Patent for Evaluating Silicon Melt Surfaces.

Introduction

Kazuo Onuma is an inventor associated with Ibaraki, Japan. His patent work includes a method and system for evaluating a silicon melt surface without contact.

Latest Patents

The provided information lists one patent for Onuma: “Non-contact silicon melt surface evaluation method and system.” The invention splits light from a source into an evaluation signal and a reference signal. These signals are directed onto a sample surface and a reference surface made of the same material. The reflected signals are then made to interfere, enabling analysis of the sample surface. Onuma is credited with 1 patent.

Career Highlights

Onuma’s listed patent focuses on optical measurement and non-contact evaluation of silicon melt surfaces. The supplied information identifies his company as “Other,” so no company is included here.

Collaborations

The provided information names Shin Nakamura and Taketoshi Hibiya as Onuma’s coworkers.

Conclusion

Kazuo Onuma’s listed invention applies interference between reflected light signals to evaluate a silicon melt surface without direct contact.

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]
Loading…