Alloy ribbon and magnetic core
US-2021304936-A1 · Sep 30, 2021 · US
Co-based amorphous magnetic thin strip for magnetic sensor, magnetic sensor using the same, and management system
US2021287833A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021287833-A1 |
| Application number | US-202117328139-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 24, 2021 |
| Priority date | Nov 29, 2018 |
| Publication date | Sep 16, 2021 |
| Grant date | — |
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- Title
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Abstract
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A Co-based amorphous magnetic thin strip for a magnetic sensor is disclosed. The Co-based amorphous magnetic thin strip has a width W equal to or smaller than 1 mm, a length L between 6 mm and 100 mm inclusive, a ratio L/W between 20 and 1000 inclusive, a strip thickness t between 10 μm and 28 μm inclusive, and a cross section of a rectangle or a trapezoid.
First claim
Opening claim text (preview).
What is claimed is: 1 . A Co-based amorphous magnetic thin strip for a magnetic sensor, comprising: a Co-based amorphous magnetic thin strip having a width W equal to or smaller than 1 mm, a length L between 6 mm and 100 mm inclusive, a ratio L/W between 20 and 1000 inclusive, a strip thickness t between 10 μm and 28 μm inclusive, and a cross section of a rectangle or a trapezoid. 2 . The Co-based amorphous magnetic thin strip according to claim 1 , wherein the Co-based amorphous magnetic thin strip has a ratio W/t between 3 and 20 inclusive. 3 . The Co-based amorphous magnetic thin strip according to claim 1 , wherein the Co-based amorphous magnetic thin strip is not damaged even when being bent 180°. 4 . The Co-based amorphous magnetic thin strip according to claim 1 , further comprising an insulation layer provided on a surface of the Co-based amorphous magnetic thin strip. 5 . A magnetic sensor comprising: an object including one or more Co-based amorphous magnetic thin strips, each being the Co-based amorphous magnetic thin strip according to claim 1 . 6 . The magnetic sensor according to claim 5 , wherein the object is a piece of paper. 7 . The magnetic sensor according to claim 6 , wherein a number of the Co-based amorphous magnetic thin strips per paper area of 62370 mm 2 corresponding to an A4 size is between 3 and 2500 inclusive. 8 . The magnetic sensor according to claim 5 , wherein the Co-based amorphous magnetic thin strips do not overlap with each other. 9 . The magnetic sensor according to claim 6 , wherein a number of the Co-based amorphous magnetic thin strips per paper area of 62370 mm 2 corresponding to an A4 size is equal to or smaller than 50 when the length L of each of the Co-based amorphous magnetic thin strip is equal to or larger than 25 mm. 10 . The magnetic sensor according to claim 6 , wherein a number of the Co-based amorphous magnetic thin strips per paper area of 62370 mm 2 corresponding to an A4 size is larger than 50 when the length L of each of the Co-based amorphous magnetic thin strip is smaller than 25 mm. 11 . The magnetic sensor according to claim 5 , further comprising an insulation layer provided on a surface of each of the one or more Co-based amorphous magnetic thin strips, wherein each of the one or more Co-based amorphous magnetic thin strips has a ratio W/t between 3 and 20 inclusive. 12 . The magnetic sensor according to claim 11 , wherein the object is a piece of paper. 13 . The magnetic sensor according to claim 12 , wherein a number of the Co-based amorphous magnetic thin strips per paper area of 62370 mm 2 corresponding to an A4 size is between 3 and 2500 inclusive. 14 . A management system comprising: the magnet sensor according to claim 5 . 15 . The management system according to claim 14 , further comprising a pair of gates that transmit and receive radio waves between one another.
Assignees
Inventors
Classifications
- H01F1/15316Primary
based on Co (H01F1/15325 takes precedence) · CPC title
Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint (G07D7/01 takes precedence) · CPC title
Measuring direction or magnitude of magnetic fields or magnetic flux (G01R33/20 takes precedence) · CPC title
- H01F10/132Primary
containing cobalt · CPC title
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- What does patent US2021287833A1 cover?
- A Co-based amorphous magnetic thin strip for a magnetic sensor is disclosed. The Co-based amorphous magnetic thin strip has a width W equal to or smaller than 1 mm, a length L between 6 mm and 100 mm inclusive, a ratio L/W between 20 and 1000 inclusive, a strip thickness t between 10 μm and 28 μm inclusive, and a cross section of a rectangle or a trapezoid.
- Who is the assignee on this patent?
- Toshiba Kk, Toshiba Materials Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification H01F1/15316. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Thu Sep 16 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).