Tungsten wire and saw wire
US-2022098708-A1 · Mar 31, 2022 · US
Tungsten wire, saw wire, and tungsten wire for screen printing
US12398447B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12398447-B2 |
| Application number | US-202117925071-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 26, 2021 |
| Priority date | Jun 19, 2020 |
| Publication date | Aug 26, 2025 |
| Grant date | Aug 26, 2025 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A tungsten wire that contains tungsten or a tungsten alloy is provided. An average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 98 nm. The tungsten wire has a tensile strength of at least 3900 MPa. The tungsten wire has a diameter of at least 100 μm and at most 225 μm.
First claim
Opening claim text (preview).
The invention claimed is: 1. A tungsten wire containing tungsten or a tungsten alloy, wherein an average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 98 nm, a tensile strength of the tungsten wire is at least 3900 MPa, and a diameter of the tungsten wire is larger than 100 μm and at most 225 μm, and a tungsten content of the tungsten wire is at least 99 wt %. 2. A screen mesh comprising a plurality of tungsten wires each being the tungsten wire according to claim 1 . 3. A tungsten wire containing tungsten or a tungsten alloy, wherein an average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 98 nm, a tensile strength of the tungsten wire is at least 3900 MPa, a diameter of the tungsten wire is at least 18 μm and at most 225 μm, and T≥4758×D 2 −7258.3×D+5275.5 is satisfied where T is the tensile strength in MPa and D is the diameter in mm. 4. A saw wire comprising a tungsten wire containing tungsten or a tungsten alloy, wherein an average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 98 nm, a tensile strength of the tungsten wire is at least 3900 MPa, and a diameter of the tungsten wire is larger than 100 μm and at most 225 μm.
Assignees
Inventors
Classifications
of refractory metals · CPC title
High-melting or refractory metals or alloys based thereon · CPC title
Alloys based on refractory metals · CPC title
Screens, Frames; Holders therefor · CPC title
by cutting with wires or closed-loop blades (B28D5/042 takes precedence) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12398447B2 cover?
- A tungsten wire that contains tungsten or a tungsten alloy is provided. An average width of surface crystal grains in a direction perpendicular to an axis of the tungsten wire is at most 98 nm. The tungsten wire has a tensile strength of at least 3900 MPa. The tungsten wire has a diameter of at least 100 μm and at most 225 μm.
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B22F5/12. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Aug 26 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).