Wako, Japan

Masaki Tsunoda

This inventor holds 37 USPTO granted patents, plus 1 CIPO patent, primarily in Outboard Engine Technology. Top assignee: Honda Giken Kogyo Kabushiki Kaisha. Active years: 1995-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masaki Tsunoda. Retrieved from https://idiyas.com/inventor/masaki-tsunoda

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 = 2.5

ph-index = 10

Forward Citations = 248(Granted Patents)


Company Filing History:


Years Active: 1995-2003

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Areas of Expertise:
Outboard Engine
Cooling System
Power Output
Vertical Engine
Four-Cycle Engine
Fuel Supply
Balancer Shaft
Engine Structure
Intake Device
Engine Assembly
Marine Engine
Crankshaft
37 patents (USPTO):Explore Patents

Title: Masaki Tsunoda – Innovator in Outboard Engine Technology

Introduction

Masaki Tsunoda, based in Wako, Japan, is a notable inventor with a remarkable portfolio of 37 patents. His work primarily focuses on advancements in outboard engine technology, showcasing his commitment to innovation in the field of marine engineering.

Latest Patents

Tsunoda's latest inventions include an outboard engine designed with an improved oil return path. This innovation features a compact and lightweight engine mounted to a boat stern by a unique mounting device with a tilt shaft. The engine houses a flywheel positioned at the lower end of a vertically extending crankshaft and incorporates an oil pan located beneath the flywheel. Notably, the design includes a return oil path strategically formed to minimize lubricant oil retention within the crank chamber during operation, effectively preventing output loss while the engine is tilted. Another innovative feature of his outboard engine design allows for a smaller and lighter connecting portion between the engine body and the mount case, further enhancing overall efficiency.

Career Highlights

Masaki Tsunoda contributes his expertise to Honda Giken Kogyo Kabushiki Kaisha, one of the leading automotive and engine manufacturers in the world. His role in the company emphasizes his dedication to developing cutting-edge technology that not only improves performance but also enhances the functionality of marine engines.

Collaborations

Throughout his career, Tsunoda has collaborated with renowned colleagues such as Tetsu Wada and Kouji Koishikawa. Their combined efforts have led to significant advancements in engine technology, demonstrating the power of teamwork in driving innovation forward.

Conclusion

Masaki Tsunoda stands out as a pioneering inventor in the realm of outboard engines. His extensive patents reflect a commitment to improving efficiency and functionality, marking a significant impact on the marine industry. As technology continues to evolve, Tsunoda's contributions will undoubtedly influence future developments in engine design.

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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