Glass article
US-2023286855-A1 · Sep 14, 2023 · US
Glass material
US12371366B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12371366-B2 |
| Application number | US-202117920855-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 11, 2021 |
| Priority date | May 15, 2020 |
| Publication date | Jul 29, 2025 |
| Grant date | Jul 29, 2025 |
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- Title
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Abstract
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A glass material less likely to cause inconveniences, such as crystallization and the generation of devitrified matters, while holding desired optical properties, has a refractive index of 1.8 or more and a content of Al 2 O 3 of over 0 to 500 mass ppm.
First claim
Opening claim text (preview).
The invention claimed is: 1. A glass material having a refractive index of 1.8 or more, a content of Al 2 O 3 of over 0 to 500 mass ppm, and containing, in terms of % by mole, 19.99 to 70% La 2 O 3 and 5 to 70% Nb 2 O 5 . 2. The glass material according to claim 1 , containing, in terms of % by mole, 5 to less than 80.01% Gd 2 O 3 +Y 2 O 3 +Yb 2 O 3 —Lu 2 O 3 +ZrO 2 +TiO 2 +Nb 2 O 5 +Ta 2 O 5 +WO 3 +Ga 2 O 3 +GeO 2 +B 2 O 3 +SiO 2 +P 2 O 5 . 3. An optical element comprising: the glass material according to claim 1 . 4. An ornament comprising: the glass material according to claim 1 . 5. A method for producing the glass material according to claim 1 , the method comprising heating a raw material block to melting with the raw material block held levitated above a forming surface of a forming die by jetting gas through a gas jet hole opening on the forming surface, thus obtaining a molten glass and then cooling the molten glass.
Assignees
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Classifications
containing TiO2 as glass former · CPC title
containing rare earths · CPC title
from melts · CPC title
containing aluminium as glass former · CPC title
Optical elements characterised by the material of which they are made; Optical coatings for optical elements · CPC title
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Frequently asked questions
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- What does patent US12371366B2 cover?
- A glass material less likely to cause inconveniences, such as crystallization and the generation of devitrified matters, while holding desired optical properties, has a refractive index of 1.8 or more and a content of Al 2 O 3 of over 0 to 500 mass ppm.
- Who is the assignee on this patent?
- Nippon Electric Glass Co
- What technology area does this patent fall under?
- Primary CPC classification C03C3/155. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Jul 29 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 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).