US2937100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Glass compositions and glass-to-metal seals
Assignee: The General Electric Company PLC
•
Filing: 1957-05-13
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Granted: 1960-05-17
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Expires: 1977-05-13
Abstract
No abstract record available.
Inventors
- 👤 Oldfield Lucy Florence
- 👤 Partridge Ethel
- 👤 Partridge Michael John Anthony
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:43
CPC Classifications
C; C03; C03C; C03C27/00; C03C27/02; C03C3/00; C03C3/04; C03C3/076; C03C3/11; C03C3/112; C03C3/115; C03C3/118
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A LITHIA-FREE GLASS SUITABLE FOR SEALING DIRECTLY TO A METAL OF THE CLASS CONSISTING OF MOLYBDENUM AND IRONNICKEL-COBALT ALLOYS, HAVING A COMPOSITION ESSENTIALLY CONSISTING OF IN THE RANGE OF 64% TO 68% SILICA (SIO2), 3.5% TO 6% ALUMINA (AL2/3), 12% TO 16.5% BORIC OXIDE (B2O2), 3% TO 5% SODIUM OXIDE (NA2/), 2% TO 5% POTASSIUM OXIDE (K2/), 0% TO 1.5% CALCIUM OXIDE (CAO), O% TO 2.5% ZINC OXIDE (ZNO), 2.5% TO 3.5% BARIUM OXIDE (BAO), O% TO 7% LEAD OXIDE (PBO), AND 0.2% TO 2% FLUORINE , THE TOTAL CONTENT OF ALKALI METAL OXIDES (NA2O+K2O) BEING FROM 6% TO 8% AND THE TOTAL CONTENT OF DIVALENT METAL OXIDES BEING FROM 4% TO 8%.
Claim 2
Dependent Claim
113 words
A LITHIA-FREE GLASS SUITABLE FOR SEALING DIRECTLY TO A METAL OF THE CLASS CONSISTING OF MOLYBDENUM AND IRONNICKEL-COBALT ALLOYS, HAVING A COMPOSITION ESSENTIALLY CONSISTING OF IN THE RANGE OF 64% TO 68% SILICA (SIO2), 3.5% TO 6% ALUMINA (AL2/3), 12% TO 16.5% BORIC OXIDE (B2O2), 3% TO 5% SODIUM OXIDE (NA2/), 2% TO 5% POTASSIUM OXIDE (K2/), 0% TO 1.5% CALCIUM OXIDE (CAO), O% TO 2.5% ZINC OXIDE (ZNO), 2.5% TO 3.5% BARIUM OXIDE (BAO), O% TO 7% LEAD OXIDE (PBO), AND 0.2% TO 2% FLUORINE , THE TOTAL CONTENT OF ALKALI METAL OXIDES (NA2O+K2O) BEING FROM 6% TO 8% AND THE TOTAL CONTENT OF DIVALENT METAL OXIDES BEING FROM 4% TO 8%.
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) | 1963-05-17 | 1963-11-16 | 1964-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-17 | 1967-11-16 | 1968-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-17 | 1971-11-16 | 1972-05-17 | $7700.00 | Window Closed / Lapsed |