Yamanashi, Japan

Yoshihisa Nagai

This inventor holds 6 USPTO granted patents. Top assignees: Pioneer Electronic Corporation, Pioneer Video Corporation, Pioneer Electric Corporation. Active years: 1988-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Yoshihisa Nagai. Retrieved from https://idiyas.com/inventor/yoshihisa-nagai

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


% Patents Active = 100.0

Average Co-Inventor Count = 2.8

ph-index = 6

Forward Citations = 180(Granted Patents)


Location History:

  • Koufu, JP (1993)
  • Yamanashi, JP (1988 - 1997)

Company Filing History:


Years Active: 1988-1997

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6 patents (USPTO):Explore Patents

Title: The Innovations of Yoshihisa Nagai

Introduction

Yoshihisa Nagai is a notable inventor based in Yamanashi, Japan. He has made significant contributions to the field of audio technology, holding a total of 6 patents. His work focuses on enhancing audio recording and reproduction systems, making them more efficient and accessible.

Latest Patents

One of his latest patents is an apparatus for recording and reproducing a frequency bandwidth coded digital audio signal. This innovative system allows for a recording method that can function effectively with both low-cost reproducing apparatuses and high-quality systems that meet the standards of Super CD technology. The recording apparatus divides audio signals into multiple frequency components, producing data for recording while adding identification data indicative of each frequency band. This enables the reproducing apparatus to selectively extract and reproduce the data accurately.

Another significant patent is for a disc playing apparatus capable of both long-time reproduction and high-speed access to desired tracks. This system maintains the advantages of a large recording capacity while ensuring that the reading operation can be stopped when a predetermined amount of residual data is detected. This innovation enhances the user experience by providing quick access to information without compromising quality.

Career Highlights

Yoshihisa Nagai has worked with prominent companies in the electronics industry, including Pioneer Electronic Corporation and Pioneer Video Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in audio technology.

Collaborations

Throughout his career, Nagai has collaborated with talented individuals such as Satoru Nomura and Tetsuro Emi. These partnerships have contributed to the advancement of his projects and the successful implementation of his inventions.

Conclusion

Yoshihisa Nagai's contributions to audio technology through his patents and collaborations highlight his innovative spirit and dedication to improving sound quality and accessibility. His work continues to influence the industry and inspire future advancements in audio technology.

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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