Himeji, Japan

Toshio Ohsawa

This inventor holds 15 USPTO granted patents, primarily in Internal Combustion Engines. Top assignees: Mitsubishi Denki Kabushiki Kaisha, Mitsubishi Denki K.k.. Active years: 1991-1995.

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

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

Calculating rank

% Patents Active = 100.0

Average Co-Inventor Count = 1.9

ph-index = 10

Forward Citations = 207(Granted Patents)


Location History:

  • Himeji, JP (1991 - 1994)
  • Hyogo, JP (1993 - 1995)

Company Filing History:


Years Active: 1991-1995

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Areas of Expertise:
Ionization Current Detector
Combustion Detection
Internal Combustion Engine
Misfiring Detection
Ignition System
Ionic Current Sensing
Knocking Detector
Pressure Sensor Failure
Control Apparatus
Engine Spark Plug
Multicylinder Engine
15 patents (USPTO):Explore Patents

Title: Innovator Toshio Ohsawa: Pioneering Detection Technology in Internal Combustion Engines

Introduction

Toshio Ohsawa, a prominent inventor based in Himeji, Japan, has made significant contributions to the field of internal combustion engine technology. With a total of 15 patents to his name, Ohsawa is recognized for his innovative approaches to detecting combustion processes, ultimately enhancing engine efficiency and performance.

Latest Patents

Among his latest inventions is the "Ionization Current Detector for Detecting the Ionization Current." This device is adept at identifying ionization currents flowing through ignition coils during fuel combustion. By utilizing a streamlined design, this detection circuit ensures that the apparatus is not only efficient in its function but also cost-effective to produce. Another notable patent is the "Combustion Detection Device for Internal Combustion Engine," which integrates an ignition coil and an ignition plug to detect ion currents generated from combustion. This technology enables precise monitoring by regulating the voltage in the secondary winding during operation.

Career Highlights

Ohsawa's career includes significant tenures at Mitsubishi Denki Kabushiki Kaisha and Mitsubishi Denki K.K. His work in these companies has propelled advancements in engine technology and electronic systems, showcasing his expertise in innovative design and engineering.

Collaborations

Throughout his career, Ohsawa has collaborated with remarkable talents, including Toshio Iwata and Wataru Fukui. These partnerships have fostered a creative environment, allowing for the development of cutting-edge technologies that greatly impact the automotive industry.

Conclusion

Toshio Ohsawa's inventive spirit and dedication to improving internal combustion engines through technology exemplify the heart of innovation. His patents not only signify his personal achievements but also contribute to the broader landscape of automotive engineering, making him a noteworthy figure in the realm of invention. As the industry continues to evolve, Ohsawa's work remains influential and relevant, paving the way for future advancements.

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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