Sanken Electric has been granted a patent for a sensor design featuring a tunnel magnetoresistance (TMR) element. The sensor includes metal layers separated by an insulator, a conductive material layer, and allows for specific current flows. GlobalData’s report on Sanken Electric gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Sanken Electric, Quantum dot devices was a key innovation area identified from patents. Sanken Electric's grant share as of May 2024 was 45%. Grant share is based on the ratio of number of grants to total number of patents.
Magnetic sensor with tunnel magnetoresistance element
A recently granted patent (Publication Number: US12000870B2) discloses a sensor design that includes a tunnel magnetoresistance (TMR) element for detecting currents. The sensor comprises multiple metal layer portions separated by an insulator material, with a conductive material layer in contact with these metal layers. The TMR element is positioned on the conductive material layer, allowing for the flow of currents through different paths within the sensor. By controlling the currents, the sensor can generate planar magnetic fields and modulate magnetic field signals to determine the magnetic field signal accurately.
Furthermore, the sensor design includes features such as a heavy metal layer to generate transversal spin currents in response to the flowing current, causing a change in resistance within the TMR element. This change in resistance can be measured to determine the current flowing through the heavy metal layer accurately. The TMR element also comprises specific layers like a free layer, barrier layer with magnesium oxide, and a reference layer, all contributing to the functionality of the sensor. Overall, the patented sensor design offers a sophisticated approach to current detection and magnetic field measurement, utilizing innovative materials and configurations to enhance performance and accuracy in various applications.
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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.
