Iwata, Japan

Tatsuo Niiyama

This inventor holds 5 USPTO granted patents. Top assignee: Yamaha Hatsudoki Kabushiki Kaisha. Active years: 1991-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tatsuo Niiyama. Retrieved from https://idiyas.com/inventor/tatsuo-niiyama

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 = 3.0

ph-index = 3

Forward Citations = 27(Granted Patents)


Company Filing History:


Years Active: 1991-1999

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5 patents (USPTO):Explore Patents

Title: Innovations of Tatsuo Niiyama

Introduction

Tatsuo Niiyama is a notable inventor based in Iwata, Japan. He has made significant contributions to the field of engineering, particularly in the design of engine components. With a total of 5 patents to his name, Niiyama's work reflects a commitment to innovation and efficiency in automotive technology.

Latest Patents

One of his latest patents is an oil pump drive for engines. This invention features an improved compact oil pump drive arrangement for internal combustion engines, utilizing an auxiliary shaft driven by the crankshaft. The oil pump is driven by a shaft positioned between the auxiliary shaft and the crankshaft, employing a helical gear arrangement. This design also includes helical gears on the auxiliary drive shaft that are configured to balance axial thrusts effectively. Another significant patent is the engine cam shaft drive arrangement. This two-stage cam shaft drive mechanism employs flexible transmitters and is driven by an intermediate shaft connected to the crankshaft. The design allows for easier accessibility and maintains a compact engine configuration.

Career Highlights

Niiyama is associated with Yamaha Hatsudoki Kabushiki Kaisha, a company renowned for its innovations in the automotive sector. His work at Yamaha has allowed him to explore and develop advanced technologies that enhance engine performance and reliability.

Collaborations

Throughout his career, Niiyama has collaborated with esteemed colleagues such as Masahiro Uchida and Kenichi Sakurai. These partnerships have fostered a creative environment that encourages the exchange of ideas and technological advancements.

Conclusion

Tatsuo Niiyama's contributions to engine technology through his patents demonstrate his innovative spirit and dedication to improving automotive engineering. His work continues to influence the industry and inspire future inventors.

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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