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US4485146A
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Glass body provided with an alkali diffusion-preventing silicon oxide layer
Assignee: AGC Inc
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Filing: 1982-07-29
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Granted: 1984-11-27
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Expires: 2002-07-29
Abstract
Abstract A glass body comprising an alkali-containing glass substrate and a silicon oxide layer formed on its surface for preventing diffusion of alkali metal ions from the glass substrate. Said silicon oxide layer contains hydrogen bonded to silicon.
Inventors
- 👤 Mamoru Mizuhashi
- 👤 Yoshio Gotoh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:37
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C23; C23C; C23C14/00; C23C14/02; C23C14/024; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/213; C03C2217/28; G02F1/133337
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
59 words
A glass body comprising an alkali-containing glass substrate and a silicon oxide layer formed on its surface for preventing diffusion of alkali metal ions from the glass substrate, wherein the silicon of said silicon oxide layer contains essentially O--Si--O and Si--H bonds and where said hydrogen is bonded to silicon in the amount of 0.01 to 25 molar %.
Claim 2
Dependent Claim
59 words
A glass body comprising an alkali-containing glass substrate and a silicon oxide layer formed on its surface for preventing diffusion of alkali metal ions from the glass substrate, wherein the silicon of said silicon oxide layer contains essentially O--Si--O and Si--H bonds and where said hydrogen is bonded to silicon in the amount of 0.01 to 25 molar %.
Claim 3
Dependent Claim
28 words
The glass body according to claim 1 wherein the content of the hydrogen bonded to silicon in the silicon oxide layer is from 0.1 to 22 molar %.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-11-27 | 1988-05-28 | 1988-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-27 | 1992-05-28 | 1992-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-27 | 1996-05-28 | 1996-11-27 | $7700.00 | Window Closed / Lapsed |