Hamamatsu, Japan

Masafumi Sougawa

This inventor holds 14 USPTO granted patents. Top assignees: Sanshin Kogyo Kabushiki Kaisha, Yamaha Hatsudoki Kabushiki Kaisha. Active years: 1985-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masafumi Sougawa. Retrieved from https://idiyas.com/inventor/masafumi-sougawa

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 = 1.4

ph-index = 8

Forward Citations = 146(Granted Patents)


Location History:

  • Shizuoka, JP (1985)
  • Hamamatsu, JP (1988 - 2000)

Company Filing History:


Years Active: 1985-2000

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14 patents (USPTO):Explore Patents

Title: Masafumi Sougawa: Innovator in Fuel Supply Systems

Introduction

Masafumi Sougawa is a prominent inventor based in Hamamatsu, Japan. He has made significant contributions to the field of fuel supply systems, holding a total of 14 patents. His work focuses on enhancing the efficiency and functionality of fuel injection systems in engines.

Latest Patents

One of his latest patents is a fuel supply system for injected engines. This invention includes various embodiments of outboard motors that utilize direct fuel injection systems. These systems feature high-pressure fuel pumps that are mechanically driven off the engine crankshaft. The patent describes a wide variety of driving arrangements, including direct and indirect drives, as well as drives that employ flexible transmitters. Additionally, the pump operating mechanisms are equipped with lubricating systems that allow for servicing of the lubricant, even when the drive arrangement is positioned outside the engine's crankcase. Another notable patent is the engine fuel supply system, which provides fuel from a source to the combustion chamber of an engine. This system includes a vapor separator that separates vapor from the fuel, a pre-pressurizing pump, and a high-pressure pump that delivers fuel to a fuel rail connected to a fuel injector. A fuel return line is also included to return undelivered fuel back to the system, with a valve controlling the flow and maintaining high pressure in the fuel rail.

Career Highlights

Throughout his career, Masafumi Sougawa has worked with notable companies such as Sanshin Kogyo and Yamaha Motor Co., Ltd. His experience in these organizations has allowed him to develop innovative solutions in the field of engine technology.

Collaborations

Masafumi has collaborated with talented individuals such as Atsushi Isogawa and Chitoshi Saito. These partnerships have contributed to the advancement of his projects and innovations.

Conclusion

Masafumi Sougawa is a distinguished inventor whose work in fuel supply systems has made a significant impact on engine technology. His numerous patents reflect his dedication to innovation and improvement in this vital area of engineering.

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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