Dental gypsum slurry
US-2021085433-A1 · Mar 25, 2021 · US
Dental gypsum powder
US11752073B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11752073-B2 |
| Application number | US-201816967880-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 24, 2018 |
| Priority date | Feb 16, 2018 |
| Publication date | Sep 12, 2023 |
| Grant date | Sep 12, 2023 |
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Abstract
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An embodiment according to the present invention provides a dental gypsum powder including a hemihydrate gypsum and a water-reducing agent, wherein the mass ratio of the water-reducing agent to the hemihydrate gypsum is 0.1 to 1%, the content of particles having a particle diameter of 10 μm or less is 15 to 35 volume %, the content of particles having a particle diameter of 20 μm or less is 40 to 55 volume %, and the content of particles having a particle diameter of 30 μm or less is 55 to 75 volume %.
First claim
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The invention claimed is: 1. A dental gypsum powder, comprising: a hemihydrate gypsum; and a water reducing agent, wherein a mass ratio of the water reducing agent to the hemihydrate gypsum is not less than 0.1% and not more than 1%, wherein a particle content of a particle with a particle size of 10 μm or less is not less than 15% by volume and not more than 35% by volume, wherein a particle content of a particle with a particle size of 20 μm or less is not less than 40% by volume and not more than 55% by volume, and wherein a particle content of a particle with a particle size of 30 μm or less is not less than 55% by volume and not more than 75% by volume.
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- What does patent US11752073B2 cover?
- An embodiment according to the present invention provides a dental gypsum powder including a hemihydrate gypsum and a water-reducing agent, wherein the mass ratio of the water-reducing agent to the hemihydrate gypsum is 0.1 to 1%, the content of particles having a particle diameter of 10 μm or less is 15 to 35 volume %, the content of particles having a particle diameter of 20 μm or less is 40 …
- Who is the assignee on this patent?
- G C Dental Ind Corp
- What technology area does this patent fall under?
- Primary CPC classification A61K6/90. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Sep 12 2023 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).