Tungsten wire and tungsten product
US-11761065-B2 · Sep 19, 2023 · US
Metal wire
US12359288B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12359288-B2 |
| Application number | US-202017781617-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 4, 2020 |
| Priority date | Dec 13, 2019 |
| Publication date | Jul 15, 2025 |
| Grant date | Jul 15, 2025 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A metal wire, which is one of a tungsten wire and a tungsten alloy wire, includes alkali metal on the surface thereof. The amount of alkali metal is at most 2.0 μg per 1 g of the metal wire.
First claim
Opening claim text (preview).
The invention claimed is: 1. A metal wire that is one of a tungsten wire and a tungsten alloy wire, wherein a diameter of the metal wire is at least 5 μm, and wherein an amount of alkali metal present on a surface of the metal wire is at least 0.1 μg per 1 g of the metal wire and at most 2.0 μg per 1 g of the metal wire. 2. The metal wire according to claim 1 , wherein the amount of alkali metal present on the surface of the metal wire is at most 1.0 μg per 1 g of the metal wire. 3. The metal wire according to claim 1 , wherein the amount of alkali metal present on the surface of the metal wire is at most 0.5 μg per 1 g of the metal wire. 4. The metal wire according to claim 1 , wherein the diameter of the metal wire is at most 40 μm. 5. The metal wire according to claim 1 , wherein the diameter of the metal wire is at most 13 μm. 6. The metal wire according to claim 1 , wherein the metal wire is a pure tungsten wire. 7. The metal wire according to claim 1 , wherein the metal wire is the tungsten wire, and the tungsten wire is doped with a dopant element that is one of potassium, thorium, and cerium. 8. The metal wire according to claim 7 , wherein a content of the dopant element is at most 0.01 wt % of a mass of the metal wire. 9. The metal wire according to claim 1 , wherein the metal wire is the tungsten alloy wire, and the tungsten alloy wire includes tungsten and a metal element that is one of rhenium, ruthenium, osmium, and iridium. 10. The metal wire according to claim 9 , wherein a content of the metal element is at least 0.1 wt % and at most 10 wt % of a mass of the metal wire. 11. The metal wire according to claim 1 , wherein the metal wire is used as a core wire of a saw wire. 12. The metal wire according to claim 1 , wherein the metal wire is used as a wire of a screen mesh.
Assignees
Inventors
Classifications
Wires · CPC title
of refractory metals · CPC title
with additional connecting elements or material · CPC title
of fine wires · CPC title
Manufacture of wire or rods with particular section or properties · CPC title
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Frequently asked questions
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- What does patent US12359288B2 cover?
- A metal wire, which is one of a tungsten wire and a tungsten alloy wire, includes alkali metal on the surface thereof. The amount of alkali metal is at most 2.0 μg per 1 g of the metal wire.
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C22C27/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 15 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).