Chiba, Japan

Otoyo Hirohumi

This inventor holds 1 USPTO granted patent and 1 EPO patent. Top assignee: Otis Elevator Company. Active years: 2008.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Otoyo Hirohumi. Retrieved from https://idiyas.com/inventor/otoyo-hirohumi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank


Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 3(Granted Patents)


Company Filing History:


Years Active: 2008

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1 patent (USPTO):Explore Patents

Title: Otoyo Hirohumi: Elevator Safety Invention

Introduction

Otoyo Hirohumi is an inventor associated with Chiba, Japan, and Otis Elevator Company. His work includes an invention designed to help prevent elevator cars from falling.

Latest Patents

Hirohumi is credited with 1 patent, titled “Car fall-prevention apparatus.” The invention describes an elevator fall-prevention apparatus with a roughly rectangular-tube-shaped holding member secured to the base of an elevator guide rail. The holding member supports a locking support member that rotates around a spindle from a standby position into a blocking position.

Career Highlights

Hirohumi’s patent reflects a focus on elevator safety, using a movable locking support member to provide a blocking function. He is associated with Otis Elevator Company.

Collaborations

Tanaka Takashi is identified as Hirohumi’s coworker.

Conclusion

Otoyo Hirohumi’s documented invention addresses elevator fall prevention through a guide-rail-mounted mechanism that moves into a blocking position.

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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