Mitsubishi Electric had 79 patents in cybersecurity during Q4 2023. Mitsubishi Electric Corp filed patents for a blockchain-based monitoring and management system for industrial automation, an attack status evaluation apparatus for emulating cyberattacks, a calculation unit for determining the number of allowable users in a room based on distance data, an encryption device for generating ciphertext and an authenticator tag, and an intrusion detection device for determining partial match entries in a whitelist for fragmented packets. GlobalData’s report on Mitsubishi Electric gives a 360-degreee view of the company including its patenting strategy. Buy the report here.

Mitsubishi Electric grant share with cybersecurity as a theme is 40% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Systems and methods for blockchain-based industrial automation (Patent ID: US20230421392A1)

The patent filed by Mitsubishi Electric Corp. describes a method and system for blockchain-based monitoring and management of industrial automation systems. The system includes a blockchain-integrated unikernel for programmable logic controllers (PLCs) that provides security checks, an immutable audit trail of operations, trusted remote updates of industrial firmware, and automated integrity checks of controller functionality by comparing against the blockchain. The system allows for authentication of update operations, control of execution operations, and communication with industrial devices such as sensors and actuators.

The claims associated with the patent detail the components and processes involved in the blockchain-based industrial automation system. These include downloading blocks and cryptographic certificates from the blockchain network, authenticating update operations, generating responses for execution operations, transmitting device state data, executing verifiable computing commands, and exchanging messages with the blockchain network. The method outlined in the patent involves downloading blocks and certificates, authenticating update operations, generating responses for execution operations, transmitting device state data, executing verifiable computing commands, and controlling industrial devices based on authenticated commands. The patent also covers the use of a unikernel for storing instructions, communication protocols with the blockchain network, and authentication based on system call requests.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.