Aluminum nitride plate
US-2021002138-A1 · Jan 7, 2021 · US
Aluminum nitride particles
US11136271B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11136271-B2 |
| Application number | US-201916575768-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 19, 2019 |
| Priority date | Mar 22, 2017 |
| Publication date | Oct 5, 2021 |
| Grant date | Oct 5, 2021 |
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- Title
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Abstract
Official abstract text for this publication.
Aluminum nitride particles used as a material of an aluminum nitride sintered compact are disclosed. The aluminum nitride particles may have a same crystal orientation. The aluminum nitride particles each have an aspect ratio of 3 or more, a plate-like shape, a planar length of 0.6 μm or more and 20 μm or less, and a thickness length of 0.05 μm or more and 2 μm or less.
First claim
Opening claim text (preview).
The invention claimed is: 1. Aluminum nitride particles used as a material of an aluminum nitride sintered compact, wherein the aluminum nitride particles have a same crystal orientation, and the aluminum nitride particles each have an aspect ratio of 3 or more; a plate-like shape; a planar length of 0.6 μm or more and 20 μm or less; and a thickness length of 0.05 μm or more and 1.9 μm or less. 2. The aluminum nitride particles according to claim 1 , wherein a surface area is 0.4 m 2 /g or more and 16 m 2 /g or less. 3. The aluminum nitride particles according to claim 2 , wherein a metal impurity concentration in the particles is 0.2 mass % or less. 4. The aluminum nitride particles according to claim 3 , wherein an oxygen concentration in the particles is 2 mass % or less. 5. The aluminum nitride particles according to claim 1 , wherein a metal impurity concentration in the particles is 0.2 mass % or less. 6. The aluminum nitride particles according to claim 1 , wherein an oxygen concentration in the particles is 2 mass % or less. 7. The aluminum nitride particles according to claim 2 , wherein an oxygen concentration in the particles is 2 mass % or less. 8. The aluminum nitride particles according to claim 5 , wherein an oxygen concentration in the particles is 2 mass % or less.
Assignees
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Classifications
Calcium oxide or oxide-forming salts thereof, e.g. lime · CPC title
Flakes, platelets or plates · CPC title
Mixing details · CPC title
Processes characterised by the flow of gas · CPC title
Removal thereof · CPC title
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- What does patent US11136271B2 cover?
- Aluminum nitride particles used as a material of an aluminum nitride sintered compact are disclosed. The aluminum nitride particles may have a same crystal orientation. The aluminum nitride particles each have an aspect ratio of 3 or more, a plate-like shape, a planar length of 0.6 μm or more and 20 μm or less, and a thickness length of 0.05 μm or more and 2 μm or less.
- Who is the assignee on this patent?
- Ngk Insulators Ltd
- What technology area does this patent fall under?
- Primary CPC classification C04B35/581. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Oct 05 2021 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).