Everspin Technologies has been granted a patent for a magnetic field sensor that improves signal-to-noise ratio for high-resolution sensing. The sensor includes multiple magnetoresistance sense elements connected in a circuit, each with ferromagnetic layers separated by an insulating barrier. The design reduces parasitic effects and optimizes alignment for accurate magnetic field detection. GlobalData’s report on Everspin Technologies 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 Everspin Technologies, In-memory computing was a key innovation area identified from patents. Everspin Technologies's grant share as of May 2024 was 47%. Grant share is based on the ratio of number of grants to total number of patents.
Magnetic field sensor with improved signal-to-noise ratio
A recently granted patent (Publication Number: US11971462B2) discloses a magnetic field sensor comprising a unique configuration of magnetoresistance sense elements. These elements are connected in a circuit and include first and second ferromagnetic layers separated by an insulating barrier layer. The sensor also incorporates flux guides positioned between the magnetoresistance sense elements to direct magnetic fields. The patent details various embodiments of the sensor, including configurations with multiple flux guides, different positioning of the flux guides, and the use of high permeability magnetic materials in the flux guides. Additionally, the sensor allows for a sense current to flow through the ferromagnetic layers when a magnetic field is detected, enabling accurate field sensing capabilities.
Furthermore, the patent describes the integration of a second circuit comprising current lines adjacent to the magnetoresistance sense elements. These current lines are positioned at specific angles relative to the ferromagnetic layers and facilitate the flow of sense current perpendicular to the current lines. The sensor design also includes a configuration where common ferromagnetic layers are shared between multiple magnetoresistance sense elements, allowing for efficient sensing of magnetic fields. Overall, the patent highlights a novel magnetic field sensor design that offers improved sensitivity and accuracy in detecting magnetic fields, making it suitable for various applications requiring precise field measurements.
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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.
