US3634111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass-ceramic cements comprising silicon carbide
Assignee: Corning Glass Works
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Filing: 1969-09-16
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Granted: 1972-01-11
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Expires: 1989-09-16
Abstract
Abstract This invention relates to the manufacture of thermally stable, structurally strong, foaming cements from TiO2- nucleated, lithium aluminosilicate glass-ceramic materials through the addition of SiC thereto. These cements are essentially free from PbO, So3, and fluoride; have coefficients of thermal expansion (25*- 800* C.) between about zero to 10 X 10 7/* C.; demonstrate excellent long time dimensional stability at temperatures up to 800* C. and very good dimensional stability at temperatures up to 1,000* C.; and exhibit good chemical durability.
Inventors
- 👤 Gordon F Foster
- 👤 Guy E Stong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:23
CPC Classifications
C; C03; C03C; C03C10/00; C03C10/0018; C03C10/0027; C03C11/00; C03C11/007; C03C27/00; C03C27/06; C03C27/10
Claims Analysis
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References Cited (Backward Citations)
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US3112184A
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US3246972A
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US3251403A
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US3189512A
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US3272686A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |