US3588577A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calcia alumina magnesia baria seal composition
Assignee: General Electric Co
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Filing: 1969-03-17
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Granted: 1971-06-28
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Expires: 1989-03-17
Abstract
Abstract AN IMPROVED SEAL OR BOND BETWEEN A REFRACTORY METAL AND A TRANSULCENT ALUMINA CERAMIC BODY USES A GLASSY SEALING COMPOSITION CENTERED ON 36.4 WEIGHT PERCET CAO, 45.0 WEIGHT PERCENT A1203, 4.7 WEIGHT PERCENT MGO, AND 13.9 WEIGHT PERCENT BAO. THIS COMPOSITION PERMITS A LOWER SEALING TEMPERATURE (1410*C.), AND A WIDER RANGE ($50*C.) IN SEALING TEMPERATURE WITHOUT DELETERIOUS EFFECTS, THAN PREVIOUSLY KNOWN COMPOSITIONS.
Inventors
- 👤 Charles I Mcvey
- 👤 William C Louden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:51
CPC Classifications
C; C04; C04B; C04B37/00; C04B37/02; C04B37/023; C04B37/025; C04B2237/00; C04B2237/02; C04B2237/04; C04B2237/06; C04B2237/068; C04B2237/10; C04B2237/12; C04B2237/122; C04B2237/30; C04B2237/32; C04B2237/34; C04B2237/343; C04B2237/40; C04B2237/403; C04B2237/50; C04B2237/59; C04B2237/595; C04B2237/62; C04B2237/72; C04B2237/76; C04B2237/765; C04B2237/84; C04B2237/88
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |