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For the Inventor, By the Inventor

Yokohama, Japan

Motoi Ohba

This inventor holds 10 USPTO granted patents. Top assignee: Matsushita Electric Industrial Co., Ltd.. Active years: 1987-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Motoi Ohba. Retrieved from https://idiyas.com/inventor/motoi-ohba

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 7

Forward Citations = 184(Granted Patents)


Location History:

  • Kawasaki, JP (1987)
  • Kanagawa, JP (1988)
  • Yokohama, JP (1988 - 1995)

Company Filing History:

goldMedal10 out of 27,375 
 
Matsushita Electric Industrial Co., Ltd.
 patents

Years Active: 1987-1995

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10 patents (USPTO):Explore Patents
1. 5446762 - Data demodulation circuit for FSK modulated RF signal receiver providing (1995-08-29),
2. 5081650 - Data receiver (1992-01-14),
3. 5008629 - Frequency synthesizer (1991-04-16),
4. 4841255 - Frequency synthesizer (1989-06-20),
5. 4812791 - Dielectric resonator for microwave band (1989-03-14),
6. 4749963 - Oscillator having stripline loop resonator (1988-06-07),
7. 4726072 - Double converter tuner (1988-02-16),
8. 4679003 - Frequency divider circuit and frequency synthesizer using the same (1987-07-07),
9. 4661998 - Double superheterodyne tuner (1987-04-28),
10. 4638180 - Frequency divider circuits (1987-01-20),

Title: **Innovative Contributions of Inventor Motoi Ohba**

Introduction

Motoi Ohba is a prominent inventor based in Yokohama, Japan, known for his substantial contributions to the field of radio frequency signal processing. With a remarkable portfolio of 10 patents, Ohba has made significant advancements, particularly in data demodulation technologies.

Latest Patents

Among his latest innovations, Ohba designed a data demodulation circuit for frequency-shift keying (FSK) modulated RF signal receivers. This invention pertains to an FSK radio receiver of the direct conversion type, which allows for the extraction of baseband signals through mixers that utilize local oscillator signals differing in phase by 90 degrees. The circuit incorporates wide-band baseband phase-shifting circuits composed solely of digital logic elements, enhancing the demodulated digital data signal's accuracy while reducing the local oscillator frequency's accuracy requirements. Additionally, Ohba developed a data receiver featuring first and second mixers that generate quadrature baseband-frequency output signals. The design enables efficient data demodulation through innovative processing techniques, ensuring high detection accuracy.

Career Highlights

Motoi Ohba has significantly influenced technology through his career at Matsushita Electric Industrial Co., Ltd. His innovative electrical engineering solutions have reshaped various aspects of RF signal processing, with a distinct focus on enhancing data communication technologies.

Collaborations

Ohba has collaborated with esteemed colleagues, including Mitsuo Makimoto and Sadahiko Yamashita. Together, they have pushed the boundaries of technological innovations within their field, working collectively to advance signal processing methodologies and techniques.

Conclusion

In conclusion, Motoi Ohba stands out as a key figure in the world of technology and innovation. His patents reflect a deep understanding of electrical engineering principles and have led to important advancements in radio frequency signal processing. Through his work, Ohba continues to influence the industry, paving the way for future innovations in communication 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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