Kanagawa, Japan

Masao Fujihira

This inventor holds 10 USPTO granted patents. Top assignee: Sony Corporation. Active years: 1992-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masao Fujihira. Retrieved from https://idiyas.com/inventor/masao-fujihira

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 = 3.2

ph-index = 8

Forward Citations = 196(Granted Patents)


Company Filing History:


Years Active: 1992-2003

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10 patents (USPTO):Explore Patents

Title: The Innovations of Masao Fujihira: A Pioneer in Audio Technology

Introduction: Masao Fujihira, an inventive mind based in Kanagawa, Japan, has made significant contributions to the field of audio technology. With a total of 10 patents to his name, Fujihira has established himself as a leading inventor in the industry, particularly through his work at Sony Corporation.

Latest Patents: Among his recent innovations, Fujihira has developed a unique speaker design. This speaker features a voice coil bobbin attached to the inner circumferential portion of a cone-type diaphragm, enabling the voice coil to be wound around the bobbin and inserted into a magnetic gap. The voice coil bobbin is crafted from a conductive material and incorporates a lengthwise gap to create a one-turn voice coil. This innovative design employs a soft bonding agent to fix the voice coil to the bobbin while allowing a high-frequency audio signal to be supplied effectively, thus enhancing audio performance.

Career Highlights: Throughout his career at Sony Corporation, Masao Fujihira has focused on advancing audio systems, which has contributed significantly to the company's reputation for high-quality sound technology. His inventive spirit and technical expertise have played a pivotal role in the development of cutting-edge audio products that are widely appreciated by consumers.

Collaborations: Masao Fujihira has worked alongside talented colleagues such as Makoto Yamagishi and Jun Kishigami. Their collaborative efforts have led to numerous advancements in audio technology, showcasing the power of teamwork in the innovation process.

Conclusion: In summary, Masao Fujihira's contributions to the audio industry through his patented inventions reflect his commitment to innovation and excellence. As he continues to push the boundaries of audio technology, his work not only enhances the consumer experience but also inspires future inventors in the field.

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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