Handle Substrate, Composite Substrate for Semiconductor, and Semiconductor Circuit Board and Method for Manufacturing the Same
US-2016005643-A1 · Jan 7, 2016 · US
Alumina powder
US2025026660A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2025026660-A1 |
| Application number | US-202218712556-A |
| Country | US |
| Kind code | A1 |
| Filing date | Nov 25, 2022 |
| Priority date | Nov 26, 2021 |
| Publication date | Jan 23, 2025 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
Disclosed is alumina powder having a relative standard deviation of a volume-based crystallite diameter distribution of 0.25 to 0.80, as determined by analyzing an X-ray diffraction peak by a fundamental parameter method.
First claim
Opening claim text (preview).
1 . Alumina powder having a relative standard deviation of a volume-based crystallite diameter distribution of 0.25 to 0.80, as determined by analyzing X-ray diffraction peaks by a fundamental parameter method. 2 . The alumina powder according to claim 1 , wherein alumina particles constituting the alumina powder have an average roundness of 0.71 to 0.86. 3 . The alumina powder according to claim 1 , wherein a volume-based crystallite diameter is from 650 to 1,400 Å.
Assignees
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Classifications
defined by measured X-ray, neutron or electron diffraction data · CPC title
Spheres · CPC title
Compounds characterised by their crystallite size · CPC title
- C01F7/02Primary
Aluminium oxide; Aluminium hydroxide; Aluminates · CPC title
based on aluminium oxide · CPC title
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Frequently asked questions
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- What does patent US2025026660A1 cover?
- Disclosed is alumina powder having a relative standard deviation of a volume-based crystallite diameter distribution of 0.25 to 0.80, as determined by analyzing an X-ray diffraction peak by a fundamental parameter method.
- Who is the assignee on this patent?
- Sumitomo Chemical Co
- What technology area does this patent fall under?
- Primary CPC classification C01F7/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Jan 23 2025 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).