Patent US2819170A successfully refreshed from Google Patents.
US2819170A
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Vitrifiable flux and silver compositions containing same
Assignee: EIDP Inc
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Filing: 1954-08-06
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Granted: 1958-01-07
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Expires: 1974-08-06
Abstract
No abstract record available.
Inventors
- 👤 Oliver A Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:21
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/51; C04B41/5105; C03; C03C; C03C17/00; C03C17/06; C03C2217/00; C03C2217/20; C03C2217/25; C03C2217/251; C03C2218/00; C03C2218/10; C03C2218/17
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
A SILVER COMPOSITION COMPRISING FINELY DIVIDED METALLIC SILVER AND VITRIFIABLE FLUX PARTICLES DISPERSED IN A VEHICLE IN A WEIGHT PROPORTION OF SILVER TO FLUX OF BETWEEN 3:1 AND 20:1, SAID FLUX CONSISTING ESSENTIALLY OF 50 TO 95% BISMUTH TRIOXIDE AND 5 TO 50% OF A CADMIUM BORATE COMPOSITION CONSISTING ESSENTIALLY OF 50 TO 95% CDO, 5 TO 50% B2O3 AND 0 TO 15% SIO2.
References Cited (Backward Citations)
US2385580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |