Toshiba had 23 patents in quantum computing during Q4 2023. The patents filed by Toshiba Corp in Q4 2023 focus on optical devices with phase controlling elements, encryption communication systems for sharing encryption keys between nodes, and user base devices with quantum cryptographic communication modules for dispersing cryptographic keys. These inventions aim to enhance security and efficiency in communication networks by utilizing advanced technologies such as quantum cryptography and encryption key generation. GlobalData’s report on Toshiba gives a 360-degreee view of the company including its patenting strategy. Buy the report here.

Toshiba grant share with quantum computing as a theme is 34% in Q4 2023. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Optical device (Patent ID: US20230412372A1)

The patent filed by Toshiba Corp describes an optical device that includes a light routing element, a combiner, a controller, and a phase controlling element to manipulate the routing of light pulses through different optical paths with fixed phase differences. The device can switch between different routing states based on control signals, allowing for encoding of quantum states and maintaining orthogonal states in different bases.

Additionally, the optical device may include multiple phase controlling elements, light guiding elements, and intensity controlling elements to further manipulate the light pulses. The device can be implemented on a photonic chip and is designed for quantum communication systems. A method for encoding quantum states using the optical device is also described, involving routing coherent light pulses through different paths with fixed phase differences and combining the outputs into a single path.

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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.