Toyota, Japan

Keita Hayakawa

This inventor holds 4 USPTO granted patents and 6 published patent applications. Top assignee: Denso Corporation. Active years: 2015-2026.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keita Hayakawa. Retrieved from https://idiyas.com/inventor/keita-hayakawa

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

Calculating rank
USPTO Granted Patents = 4 

% Patents Active = 100.0

Average Co-Inventor Count = 2.9

ph-index = 1

Forward Citations = 2(Granted Patents)


Location History:

  • Nagoya, JP (2015)
  • Toyota, JP (2016)
  • Kariya, JP (2023)

Company Filing History:


Years Active: 2015-2026

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4 patents (USPTO):Explore Patents

Title: Keita Hayakawa: Vehicle Security and Message Monitoring Inventions

Introduction

Keita Hayakawa is an inventor based in Toyota, Japan, whose work focuses on security and monitoring technologies for vehicle electronic control systems. His listed inventions address the analysis of security logs and the detection of abnormal messages exchanged between electronic control units. He is associated with Denso Corporation and has 4 patents.

Latest Patents

Hayakawa’s latest listed patents include two inventions related to vehicle cybersecurity and electronic control unit communications.

“Log Determination Device, Log Determination Method, Log Determination Program, and Log Determination System” describes a system that collects security logs generated when an abnormality is detected in a vehicle’s electronic control system. It identifies logs based on abnormality type, evaluates how frequently they occur, and determines whether a specific log is a false positive. The resulting information can support analysis of potential attacks and the development of countermeasures.

“Message Monitoring System, Message Transmission Electronic Control Unit, and Monitoring Electronic Control Unit” describes a method for checking whether messages exchanged over a vehicle communication network are normal. One electronic control unit sends a message and periodically transmits a second message containing a feature value for the first. A monitoring unit calculates a feature value from the received message and compares it with the stored value to assess the message.

Career Highlights

Hayakawa’s listed patent work reflects an emphasis on practical vehicle security. His inventions address both the interpretation of security alerts and the verification of communications between electronic control units, helping support the monitoring of complex automotive systems.

Collaborations

Hayakawa is associated with Denso Corporation. His listed coworker is Hironobu Akita.

Conclusion

Keita Hayakawa’s patent work centers on vehicle cybersecurity, combining security-log analysis with message monitoring to help identify potential threats to electronic control systems.

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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