Fujisawa, Japan

Mitsuo Ohsawa

This inventor holds 34 USPTO granted patents, primarily in Electrical Circuits. Top assignee: Sony Corporation. Active years: 1976-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Mitsuo Ohsawa. Retrieved from https://idiyas.com/inventor/mitsuo-ohsawa

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 = 1.3

ph-index = 11

Forward Citations = 434(Granted Patents)


Location History:

  • Fujisawa, JA (1976 - 1978)
  • Fujisawa, JP (1978 - 1980)
  • Tokyo, JP (1982)
  • Chigasaki, JP (1979 - 1988)
  • Kanagawa, JP (1982 - 1990)

Company Filing History:


Years Active: 1976-1990

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Areas of Expertise:
Power Supply
Demodulator
Integrated Circuits
Printed Circuit Board
Regulated DC
Current Control
Frequency Converter
Stereo Signal
Circuit Arrangement
Amplifier
Switching Regulator
Phase Locked Loop
34 patents (USPTO):Explore Patents

Title: Innovations of Mitsuo Ohsawa: A Visionary at Sony Corporation

Introduction

Mitsuo Ohsawa, a prominent inventor based in Fujisawa, Japan, has made significant contributions to the field of technology with a remarkable portfolio of 34 patents. His innovative work has greatly impacted the industry, demonstrating ingenuity and foresight in the development of advanced systems and apparatuses.

Latest Patents

Among his latest innovations, Ohsawa has developed a noteworthy System Analyzer. This device operates as a spectrum analyzer, dividing an input signal into multiple frequency bands. It detects the signal level of these bands and calculates the signal levels of the frequencies situated in between, using arithmetic operating circuits. The results, which include both detected and calculated signal levels, can be visualized as bar graphs, thus allowing for an effective observation of the frequency characteristics of the input signal. Another significant invention he contributed to is the Scrambling Apparatus, which showcases Ohsawa's versatility and expertise in designing complex technological solutions.

Career Highlights

Mitsuo Ohsawa's career is closely tied to his association with Sony Corporation, a leading multinational in the electronics sector. His work within the company has helped pioneer advancements in signal processing and analytics, solidifying his reputation as an innovator in electronic systems.

Collaborations

Throughout his illustrious career, Ohsawa has had the pleasure of collaborating with esteemed colleagues such as Hiroshi Nakazawa and Akio Koizumi. Their teamwork has enriched the creative synergies at Sony Corporation, leading to the generation of groundbreaking technologies.

Conclusion

Mitsuo Ohsawa stands out as a remarkable inventor whose contributions to the realm of technology continue to resonate today. With his extensive portfolio of patents and collaborative spirit, he has left an indelible mark on the industry, inspiring future generations of inventors and innovators.

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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