Strain sensor element and blood pressure sensor
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United States of America Patent
Stats
-
Jun 19, 2018
Issued Date -
N/A
app pub date -
Jul 30, 2015
filing date -
Sep 30, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A strain sensor element comprises a laminated film which has a magnetic free layer, a spacer layer, and a magnetic reference layer. The free layer has a variable magnetization direction and a out-of-plane magnetization direction. The reference layer has a variable magnetization direction which is pinned more strongly than the magnetization of the free layer. The spacer layer provided between the free layer and the reference layer. A pair of electrodes is provided with a plane of the laminated film. A substrate is provided with either of the pair electrodes and can be strained. The rotation angle of the magnetization of the free layer is different from the rotation angle of the magnetization of the reference layer when the substrate is distorted. Electrical resistance is changed depending on the magnetization angle between the free layer and the reference layer, which allows the element to operate as a strain sensor.
First Claim
Other Claims data not available
Family
International Classification(s)
- 2015 Application Filing Year
- G01L Class
- 1174 Applications Filed
- 940 Patents Issued To-Date
- 80.07 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 2 Citation Count
- G01L Class
- 24.45 % this patent is cited more than
- 7 Age
Maintenance Fees
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| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 19, 2025 |
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