Shandong, China

Katsunari Fujita

This inventor holds 2 USPTO granted patents and 1 EPO patent. Top assignee: Hosiden Corporation. Active years: 2012-2015.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsunari Fujita. Retrieved from https://idiyas.com/inventor/katsunari-fujita

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

Calculating rank

% Patents Active = 50.0


Average Co-Inventor Count = 4.4

ph-index = 2

Forward Citations = 16(Granted Patents)


Company Filing History:


Years Active: 2012-2015

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2 patents (USPTO):Explore Patents

Title: Innovations of Katsunari Fujita

Introduction

Katsunari Fujita is a notable inventor based in Shandong, China. He has made significant contributions to the field of electroacoustic devices, holding a total of 2 patents. His work focuses on improving the efficiency and productivity of electroacoustic transducing devices.

Latest Patents

Fujita's latest patents include an innovative electroacoustic transducing device designed for use in portable telephones and similar applications. This device features a yoke-integral frame that is created through a simplified process, reducing the number of components and production steps. The design includes a magnetic circuit with a yoke, magnet, and pole piece, as well as a vibration system that consists of a diaphragm and voice coil. The voice coil is strategically placed in a magnetic gap, and the frame is formed by pressing a single sheet of metal into a bottomed tubular shape. This design enhances productivity while maintaining audio performance.

Career Highlights

Fujita is currently associated with Hosiden Corporation, where he continues to innovate in the field of electroacoustic technology. His work has been instrumental in advancing the design and functionality of audio devices.

Collaborations

Fujita has collaborated with notable colleagues such as Hideo Yuasa and Hidenori Motonaga, contributing to the development of cutting-edge technologies in their field.

Conclusion

Katsunari Fujita's contributions to electroacoustic transducing devices highlight his innovative spirit and dedication to improving audio technology. His patents reflect a commitment to enhancing productivity and performance in the industry.

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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