Nara, Japan

Hiroyuki Yoshii

This inventor holds 11 USPTO granted patents, plus 3 CIPO patents and 1 EPO patent. Top assignees: Fujitsu Ten Limited, Time Domain Corporation, Other. Active years: 2002-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroyuki Yoshii. Retrieved from https://idiyas.com/inventor/hiroyuki-yoshii

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


% Patents Active = 63.6



Average Co-Inventor Count = 3.0

ph-index = 5

Forward Citations = 63(Granted Patents)


Location History:

  • Nara, JP (2002 - 2006)
  • Ikoma, JP (2004 - 2006)

Company Filing History:


Years Active: 2002-2006

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11 patents (USPTO):Explore Patents

Title: Hiroyuki Yoshii: Innovator in Speaker Technology

Introduction

Hiroyuki Yoshii is a prominent inventor based in Nara, Japan. He has made significant contributions to the field of audio technology, particularly in speaker systems. With a total of 11 patents to his name, Yoshii has developed innovative solutions that enhance sound quality and performance.

Latest Patents

Yoshii's latest patents include a speaker system featuring processing circuitry. This design incorporates a weight attached to the rear side of a magnetic circuit of a speaker unit. The tip of a boss projecting from the front side of the weight is joined to the rear side of a center pole of the magnetic circuit with a bolt. This configuration effectively suppresses the vibration of the magnetic circuit, resulting in improved sound quality with excellent transient characteristics. Another notable patent is a speaker assembly that utilizes multiple drivers, employing a similar weight mechanism to enhance sound performance.

Career Highlights

Throughout his career, Hiroyuki Yoshii has worked with notable companies such as Time Domain Corporation and Fujitsu Ten Limited. His experience in these organizations has allowed him to refine his expertise in audio technology and contribute to groundbreaking innovations in speaker design.

Collaborations

Yoshii has collaborated with talented individuals in the industry, including Akira Nishikawa and Hiroshi Kowaki. These partnerships have fostered a creative environment that has led to the development of advanced audio technologies.

Conclusion

Hiroyuki Yoshii's contributions to speaker technology have significantly impacted the audio industry. His innovative designs and patents continue to influence sound quality and performance in modern audio 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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