Hitachi, Japan

Tsutomu Hiramatsu

This inventor holds 1 USPTO granted patent. Top assignee: Hitachi, Ltd.. Active years: 1977.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Hiramatsu. Retrieved from https://idiyas.com/inventor/tsutomu-hiramatsu

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 = 4.0

ph-index = 1

Forward Citations = 17(Granted Patents)


Company Filing History:


Years Active: 1977

Loading Chart...
1 patent (USPTO):Explore Patents

Title: Tsutomu Hiramatsu: Innovator in Engine Technology

Introduction

Tsutomu Hiramatsu is a notable inventor based in Hitachi, Japan. He has made significant contributions to the field of internal combustion engines, particularly in the detection of misfires. His innovative approach has led to the development of a unique apparatus that enhances engine performance and reliability.

Latest Patents

Hiramatsu holds a patent for an "Apparatus for detecting misfire in multicylinder internal combustion." This invention involves a sound pick-up transducer located in the exhaust passage of the engine. The apparatus is designed to detect exhaust sound, integrating the electric output of the transducer in synchronism with the engine's rotation. A comparison circuit then evaluates this output against a reference signal, allowing for the detection of misfires based on the comparison circuit's output. This technology is crucial for improving engine efficiency and reducing emissions.

Career Highlights

Throughout his career, Tsutomu Hiramatsu has been associated with Hitachi, Ltd., a leading company in technology and engineering. His work has focused on enhancing the performance of internal combustion engines, contributing to advancements in automotive technology. Hiramatsu's innovative spirit and technical expertise have positioned him as a key figure in his field.

Collaborations

Hiramatsu has collaborated with notable colleagues, including Yasumasa Matsuda and Ichiro Kimura. These partnerships have fostered a creative environment that encourages innovation and the development of cutting-edge technologies.

Conclusion

Tsutomu Hiramatsu's contributions to engine technology through his patented inventions demonstrate his commitment to innovation. His work not only enhances engine performance but also contributes to a more sustainable future in automotive 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]
Loading…