US2822279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vitrifiable flux and silver compositions containing same
Assignee: EIDP Inc
•
Filing: 1954-08-06
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Granted: 1958-02-04
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Expires: 1974-08-06
Abstract
No abstract record available.
Inventors
- 👤 William R Larsen
- 👤 Oliver A Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:36
CPC Classifications
C; C04; C04B; C04B41/00; C04B41/45; C04B41/50; C04B41/51; C04B41/5183; C03; C03C; C03C17/00; C03C17/02; C04B41/009; C04B41/5116; C04B41/80; C04B41/81; C04B41/85; C04B41/88; H; H01; H01B; H01B1/00; H01B1/14; H01B1/16; C04B2111/00; C04B2111/00474; C04B2111/00844
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A VITRIFIABLE FLUX CONSISTING ESSENTIALLY OF 60 TO 90% BISMUTH TRIOXIDE AND 10 TO 40% OF AN ALKALI METALCADMIUM BORATE COMPOSITION CONSISTING ESSENTIALLY OF 5 TO 10% ALKALI METAL OXIDE, 55 TO 80% CDO, 10 TO 25% B2O3 AND 0 TO 20% SIO2, THE ABOVE OXIDE COMPONENTS CONSTITUTING AT LEAST 75% OF SAID FLUX.
Claim 2
Dependent Claim
54 words
A VITRIFIABLE FLUX CONSISTING ESSENTIALLY OF 60 TO 90% BISMUTH TRIOXIDE AND 10 TO 40% OF AN ALKALI METALCADMIUM BORATE COMPOSITION CONSISTING ESSENTIALLY OF 5 TO 10% ALKALI METAL OXIDE, 55 TO 80% CDO, 10 TO 25% B2O3 AND 0 TO 20% SIO2, THE ABOVE OXIDE COMPONENTS CONSTITUTING AT LEAST 75% OF SAID FLUX.
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) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |