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For the Inventor, By the Inventor

Higashikurume, Japan

Toshimitsu Kamai

This inventor holds 5 USPTO granted patents. Top assignees: Sony Corporation, Other. Active years: 1983-1985.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshimitsu Kamai. Retrieved from https://idiyas.com/inventor/toshimitsu-kamai

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

USPTO Granted Patents = 5

% Patents Active = 100.0

Average Co-Inventor Count = 2.4

ph-index = 3

Forward Citations = 25(Granted Patents)


Location History:

  • Shinagawa-ku, Tokyo, JP (1983)
  • Higashikurume, JP (1983 - 1985)

Company Filing History:

goldMedal4 out of 58,147 
 
Sony Corporation
 patents
silverMedal1 out of 834,570 
Other
 patents

Years Active: 1983-1985

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5 patents (USPTO):Explore Patents
1. 4527203 - Apparatus for reproducing video and audio signals (1985-07-02),
2. 4492986 - VTR With high-quality audio recording system (1985-01-08),
3. 4490751 - Apparatus for recording and/or reproducing video and audio signals (1984-12-25),
4. 4405955 - Video signal reproducing apparatus (1983-09-20),
5. 4399473 - Apparatus for reproducing video signals in a slow-motion operating mode (1983-08-16),

Title: The Innovations of Toshimitsu Kamai

Introduction

Toshimitsu Kamai is a notable inventor based in Higashikurume, Japan. He has made significant contributions to the field of audio and video signal processing, holding a total of 5 patents. His work has influenced the development of various technologies in the entertainment industry.

Latest Patents

One of Kamai's latest patents is an apparatus for reproducing video and audio signals. This innovative device includes an audio signal processing circuit that reproduces audio signals recorded on a magnetic recording medium. It features a mixed signal processing circuit that handles audio signals from adjacent slant tracks, ensuring high-quality audio reproduction. Another significant patent is a VTR with a high-quality audio recording system. This apparatus utilizes frequency modulators to record audio signals alongside video signals, optimizing the recording process for better sound quality.

Career Highlights

Throughout his career, Kamai has worked with prominent companies, including Sony Corporation. His experience in the industry has allowed him to develop cutting-edge technologies that enhance audio and video experiences for consumers.

Collaborations

Kamai has collaborated with talented individuals such as Takashi Kono and Hiroyuki Kaimai. These partnerships have contributed to the advancement of his innovative projects and patents.

Conclusion

Toshimitsu Kamai's contributions to audio and video technology have left a lasting impact on the industry. His patents reflect a commitment to innovation and quality in 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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