Tokyo, Japan

Takashi Iihara

This inventor holds 1 USPTO granted patent. Top assignee: G.p.s. Co., Ltd.. Active years: 2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Iihara. Retrieved from https://idiyas.com/inventor/takashi-iihara

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 = 5.0

ph-index = 1

Forward Citations = 231(Granted Patents)


Company Filing History:


Years Active: 2002

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1 patent (USPTO):Explore Patents

Title: Takashi Iihara: Innovator in Golf Club Technology

Introduction

Takashi Iihara is a notable inventor based in Tokyo, Japan. He has made significant contributions to the field of sports equipment, particularly in the design and manufacturing of golf club heads. His innovative approach has led to the development of a unique golf club head that enhances performance and manufacturability.

Latest Patents

Iihara holds a patent for a golf club head that features a hollow structure made from a metallic material. This golf club head consists of a three-piece structure, including a main head body, face, and crown. The main head body and crown are formed through casting or press-forming, while the face is created by press-forming. These components are then joined together using welding techniques. The materials selected for this invention include various types of steel, specifically martensite deposition hardening-type stainless steel, maraging steel, and maraging stainless steel. The design allows for a specific gravity of 7.07 or higher, with the head body having a volume of 280-320 cc and a weight of 180-205 g. This innovative design increases the meet rate, offers design freedom, exhibits excellent processability, and can be manufactured at a low cost.

Career Highlights

Iihara is associated with G.P.S. Co., Ltd., where he continues to push the boundaries of golf equipment technology. His work has not only contributed to the advancement of golf club design but has also set new standards in the industry.

Collaborations

Iihara has collaborated with notable colleagues, including Hiroyuki Ezawa and Toshiki Oonaka. Their combined expertise has fostered an environment of innovation and creativity within their projects.

Conclusion

Takashi Iihara's contributions to the golf industry through his innovative golf club head design exemplify the impact of creativity and engineering in sports equipment. His work continues to influence the way golf clubs are designed and manufactured, showcasing the importance of innovation in enhancing athletic 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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