Yono, Japan

Katsushi Ishihara

This inventor holds 1 USPTO granted patent. Top assignee: Nippon Piston Ring Co., Ltd.. Active years: 1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Katsushi Ishihara. Retrieved from https://idiyas.com/inventor/katsushi-ishihara

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 = 2(Granted Patents)


Company Filing History:


Years Active: 1993

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1 patent (USPTO):Explore Patents

Title: Katsushi Ishihara - Innovator in Oil Ring Assembly Technology

Introduction

Katsushi Ishihara is a notable inventor based in Yono, Japan. He has made significant contributions to the field of piston technology, particularly with his innovative designs that enhance engine performance. His work is recognized for its technical precision and practical applications in the automotive industry.

Latest Patents

Ishihara holds a patent for a three-piece type oil ring assembly. This assembly is designed to fit within an oil ring groove of a piston located in a cylinder. The invention features a spacer expander made of section steel, which has a unique H-shaped radial cross-section. The assembly includes upper and lower side rails, each designed as a gapped flat annulus. The spacer expander is characterized by its axially protruding outer and inner portions, which are strategically designed to improve the efficiency of the oil ring assembly.

Career Highlights

Katsushi Ishihara is associated with Nippon Piston Ring Co., Ltd., where he has contributed to various projects aimed at enhancing piston ring technology. His innovative approach has led to advancements that benefit engine performance and durability. With a focus on precision engineering, Ishihara's work has garnered attention in the automotive sector.

Collaborations

Ishihara has collaborated with notable colleagues, including Takeji Tsuchiya and Yukio Tateishi. Their combined expertise has fostered an environment of innovation and creativity, leading to the development of cutting-edge technologies in piston design.

Conclusion

Katsushi Ishihara's contributions to the field of piston technology, particularly through his patented oil ring assembly, highlight his role as a key innovator in the industry. His work continues to influence advancements in automotive engineering, showcasing the importance of innovation in enhancing engine performance.

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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