Tokyo, Japan

Ryoji Miyahara

This inventor holds 13 USPTO granted patents and 8 published patent applications and 4 EPO patents. Top assignees: Nec Corporation, Nec Platforms, Ltd., Renesas Electronics Corporation. Active years: 2015-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ryoji Miyahara. Retrieved from https://idiyas.com/inventor/ryoji-miyahara

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

USPTO Granted Patents = 13 

% Patents Active = 100.0

 

Average Co-Inventor Count = 1.9

ph-index = 1

Forward Citations = 8(Granted Patents)


Location History:

  • Tokyo, JP (2015 - 2019)
  • Kanagawa, JP (2020 - 2024)

Company Filing History:


Years Active: 2015-2025

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13 patents (USPTO):Explore Patents

Title: Ryoji Miyahara: Innovator in Voice Output Technology

Introduction

Ryoji Miyahara is a prominent inventor based in Tokyo, Japan. He has made significant contributions to the field of voice output technology, holding a total of 12 patents. His innovative work focuses on enhancing sound quality and processing signals effectively.

Latest Patents

Miyahara's latest patents include a voice output apparatus, voice output method, and voice output program. This invention provides a voice output apparatus designed to deliver high-quality sound directly to the eardrum of a user. The apparatus features a first voice output unit that directs sound into the ear canal based on an output voice signal. Additionally, it includes a first noise acquirer that captures external noise and an echo canceler that mitigates the influence of leaked sound. Another notable patent is a signal processing apparatus, which ensures high-quality output signals even when the phase of an input signal differs significantly from that of the true voice. This apparatus utilizes a voice detector and a corrector to enhance the quality of mixed signals.

Career Highlights

Throughout his career, Ryoji Miyahara has worked with notable companies such as NEC Corporation and NEC Platforms, Ltd. His experience in these organizations has allowed him to develop and refine his innovative technologies.

Collaborations

Miyahara has collaborated with talented individuals in his field, including Akihiko Sugiyama and Kouji Oosugi. These partnerships have contributed to the advancement of his inventions and the overall progress in voice output technology.

Conclusion

Ryoji Miyahara's contributions to voice output technology through his patents and collaborations highlight his role as a leading inventor in this field. His work continues to influence advancements in sound quality and signal processing.

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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