Renesas Electronics had ten patents in cybersecurity during Q4 2023. Renesas Electronics Corp filed patents in Q4 2023 for an apparatus with a memory slot containing a certificate chain and a protected memory block, a semiconductor device with a reset controller and address check unit for boot program security, and a system for secure decryption through virtualization and key translation. These patents focus on enhancing security measures in memory protection, boot program execution, and encryption key management. GlobalData’s report on Renesas Electronics gives a 360-degreee view of the company including its patenting strategy. Buy the report here.

Renesas Electronics grant share with cybersecurity as a theme is 30% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Write protect function with secure certificate authentication (Patent ID: US20230394160A1)

The patent filed by Renesas Electronics Corp. describes an apparatus with a memory slot containing a certificate chain for an entity and a memory block with protection enabled. The processing device in the apparatus receives a request message from the entity's computing device to clear protection for the memory block, validates the request using a signature generated from the entity's private key, and clears the protection if the signature is valid and corresponds to the certificate chain.

The apparatus can also receive and install certificate chains, differentiate between memory blocks with protection enabled, and handle multiple requests for clearing protection based on the validity of signatures and certificate chains. Additionally, the patent covers scenarios where protection can be cleared based on matching nonces, updating firmware with secure signature verification, and activating firmware based on hash verification. The method outlined in the patent ensures secure and authenticated access to memory blocks within the apparatus, providing a robust protection mechanism against unauthorized access or modifications.

To know more about GlobalData’s detailed insights on Renesas Electronics, buy the report here.

Premium Insights


The gold standard of business intelligence.

Blending expert knowledge with cutting-edge technology, GlobalData’s unrivalled proprietary data will enable you to decode what’s happening in your market. You can make better informed decisions and gain a future-proof advantage over your competitors.


GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.