Aichi, Japan

Toshiharu Shiramizu

This inventor holds 1 USPTO granted patent, plus 1 CIPO patent. Top assignee: Kabushiki Kaisha Tokai Rika Denki Seisakusho. Active years: 1988.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Toshiharu Shiramizu. Retrieved from https://idiyas.com/inventor/toshiharu-shiramizu

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

Calculating rank

% Patents Active = 100.0


Average Co-Inventor Count = 2.0

ph-index = 1

Forward Citations = 12(Granted Patents)


Company Filing History:


Years Active: 1988

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1 patent (USPTO):Explore Patents

Title: Toshiharu Shiramizu: Inventor of a Steering Lock Device.

Introduction

Toshiharu Shiramizu is an inventor associated with Aichi, Japan, and Kabushiki Kaisha Tokai Rika Denki Seisakusho. His recorded patent concerns a steering lock device designed to control access to a vehicle’s steering mechanism.

Latest Patents

Shiramizu is credited with 1 patent, titled “Steering lock device.” The invention describes a key rotor that can rotate and move axially within a cylinder, along with a lock cam coupled to the rotor. The cam controls a lock member that locks or unlocks the steering mechanism. A regulating plate normally prevents the cam from moving from the unlocked position to the locked position. When the key rotor is pushed inward, a drive cam moves the regulating plate, allowing the lock cam to turn and engage the lock.

Career Highlights

Shiramizu’s documented patent work reflects an engineering focus on vehicle security and steering-lock mechanisms. The patent’s design coordinates movement of the key rotor, lock cam, regulating plate, and lock member to govern the transition between locked and unlocked states.

Collaborations

Shiramizu is associated with Kabushiki Kaisha Tokai Rika Denki Seisakusho. His listed coworker is Nobuyoshi Yasuhara.

Conclusion

Toshiharu Shiramizu’s recorded invention addresses vehicle steering security through a coordinated mechanical locking system, representing his documented contribution to automotive technology.

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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