Composite glass, especially for a vehicle
US-2024391215-A1 · Nov 28, 2024 · US
Alkali-free glass
US9023744B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9023744-B2 |
| Application number | US-201113817196-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 10, 2011 |
| Priority date | Aug 17, 2010 |
| Publication date | May 5, 2015 |
| Grant date | May 5, 2015 |
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Abstract
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Provided is an alkali-free glass, which is substantially free of alkali metal oxides, and has a strain point of more than 680° C., an average coefficient of thermal expansion in the temperature range of 30 to 380° C. of 40 to 55×10 −7 /° C., and a liquidus temperature of less than 1,200° C. Further, the alkali-free glass comprises, as a glass composition in terms of mass %, 55 to 70% of SiO 2 , 10 to 20% of Al 2 O 3 , 0.1 to 4.5% of B 2 O 3 , 0 to 1% of MgO, 5 to 15% of CaO, 0.5 to 5% of SrO, and 5 to 15% of BaO.
First claim
Opening claim text (preview).
The invention claimed is: 1. An alkali-free glass, which is substantially free of alkali metal oxides, and has a strain point of more than 680° C., an average coefficient of thermal expansion in a temperature range of 30 to 380° C. of 40×10 −7 /° C. to 55×10 −7 /° C., and a liquidus temperature of less than 1,220° C., wherein the alkali-free glass comprises, as a glass composition in terms of mass %, 55 to 70% of SiO 2 , 10 to 20% of Al 2 O 3 , 0.1 to 4.5% of B 2 O 3 , 0 to 0.8% o…
Assignees
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Classifications
- C03C3/091Primary
Chemistry & Metallurgy · mapped topic
Chemistry & Metallurgy · mapped topic
Electricity · mapped topic
Electricity · mapped topic
Electricity · mapped topic
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- What does patent US9023744B2 cover?
- Provided is an alkali-free glass, which is substantially free of alkali metal oxides, and has a strain point of more than 680° C., an average coefficient of thermal expansion in the temperature range of 30 to 380° C. of 40 to 55×10 −7 /° C., and a liquidus temperature of less than 1,200° C. Further, the alkali-free glass comprises, as a glass composition in terms of mass %, 55 to 70% of SiO 2 ,…
- Who is the assignee on this patent?
- Kawaguchi Takahiro, Miwa Shinkichi, Nippon Electric Glass Co
- What technology area does this patent fall under?
- Primary CPC classification C03C3/091. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue May 05 2015 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).