Sagamihara, Japan

Tokushi Koumaru

This inventor holds 1 USPTO granted patent. Top assignees: Mitsubishi Jukogyo Kabushiki Kaisha, The Yokohama Rubber Co., Ltd.. Active years: 1996.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tokushi Koumaru. Retrieved from https://idiyas.com/inventor/tokushi-koumaru

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 = 1

Forward Citations = 7(Granted Patents)


Company Filing History:


Years Active: 1996

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

Title: Tokushi Koumaru: Innovator in Coupling Technology

Introduction

Tokushi Koumaru is a notable inventor based in Sagamihara, Japan. He is recognized for his innovative contributions to coupling technology, particularly through his patent for a bolt-tightened type coupling. His work has had a significant impact on the engineering and manufacturing sectors.

Latest Patents

Koumaru holds a patent for a bolt-tightened type coupling. This invention features a pair of semi-circular arc-shaped coupling halves that are pivotably connected at their base ends. The design allows the coupling halves to move toward each other to achieve a closed position or away from each other to reach an open position. Each coupling half has free ends equipped with flanges that contain bolt inserting holes. One of these holes is uniquely shaped to ensure a tight fit for the bolt, allowing it to be securely held in place.

Career Highlights

Throughout his career, Tokushi Koumaru has worked with prominent companies, including Mitsubishi Jukogyo Kabushiki Kaisha and The Yokohama Rubber Co., Ltd. His experience in these organizations has contributed to his expertise in the field of coupling technology.

Collaborations

Koumaru has collaborated with notable coworkers such as Michio Kyoya and Rakuzo Katayama. Their collective efforts have further advanced the innovations in coupling mechanisms.

Conclusion

Tokushi Koumaru's contributions to coupling technology through his patent demonstrate his innovative spirit and technical expertise. His work continues to influence the industry, showcasing the importance of creativity in engineering solutions.

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…